"fourth chapter" is correct and usable in written English.
For example, "In the fourth chapter of the novel, the protagonist makes a difficult decision."
Now its owner hopes to write a fourth chapter.
How convenient, and only in the fourth chapter.
The fourth chapter, which covers human slavery in the Florida tomato fields, is the most shocking.
Its fourth chapter was founded in Mr. Ryan's home state, Wisconsin.
But after a shocking finale, what can we expect in the fourth chapter?
Am writing the fourth chapter with the regimental doctor, in bold, strong lines.
The fourth chapter turns to the first of the 4Ps of creativity Product.
The fourth chapter gives a tutorial on designing actors in Java.
Several approaches to the theory of genetic algorithms are discussed in depth in the fourth chapter.
In the fourth chapter we develop a more general approach to the state-space filtering problem.
Denver was recently approved as the fourth chapter of Harvard Alumni Entrepreneurs Shared Interest Group.
