Does the Phantom 4 RTK work with Pix4D Capture?

Hello @chrisnoel You can find the list of the supported drone in the below support article, Supported drones, cameras, and controllers - PIX4Dcapture.
Pix4D is currently working on the next generation of PIX4Dcapture, which will be based on the current PIX4Dscan. We expect this professional application to be launched in the summer. This is now accessible for all Pix4D license holders, including trial licenses. If your drone is supported by the app, I would suggest you to try it. Download PIX4Dscan for iOS and Android.

Regarding the processing of the data, you can follow the below thread