"4th week" is correct and usable in written English.
You can use it to refer to a specific week out of a sequence of weeks. For example: I plan to complete the project in the 4th week.
Referred to in court as D, she entered a not guilty plea to a charge of intimidation last week while wearing a niqab after the judge backed down from a previous decision that she would have to show her face to be properly identified.
"It's only what happened a couple of weeks ago or next week that matters.
Washington, March 8, 2011.
"Scoring is not up, but injuries are up," Tallon said of the current rule last week.
I think there might have been the odd humorous comment over the porridge about supposing he had some work to do next week".
Gray died a week after he was arrested on 12 April, then handcuffed and shackled in the back of a police van without a seatbelt.
Gray only last week said Rudd was able to "get himself into the media … what he can't do is govern and what he can't do is lead the Labor party".
This week, the households were asked to take a part in a "digital detox" where they would use no digital devices for two hours on a week day and on a Saturday or Sunday.
In the UK, GNM publishes the Guardian newspaper six days a week, first published in 1821, and the world's oldest Sunday newspaper, The Observer.
Fewer than 100 cases of Ebola have been reported in west Africa in the last week, according to the World Health Organisation, which says the outbreak has now effectively moved into the endgame.
Gina McCarthy, who heads the EPA, said in a press call last week that her agency had found that 80% of small business owners supported the rule, as did a majority of those individuals and organizations who submitted public comments in the run-up to the rule's introduction.
