[Merriam-Webster][1] (in a blog) says to pronounce the "x" in "latinx" as "ex", and they give the pronunciation as "\luh-TEE-neks\" which in IPA would be something like /lə'ti neks/. [Cambridge has voice samples][2] that are similar.


  [1]: https://www.merriam-webster.com/words-at-play/word-history-latinx
  [2]: https://dictionary.cambridge.org/pronunciation/english/latinx