I wish to monitor android data traffic to find IP of proxies used

Hello,

I have an android phone and I am running this app on it https://play.google.com/store/apps/details?id=com.proxyBrowser

This app uses proxies to access any website, I wish to know the IP addresses of the proxies used.

I have wireshark running on pc and I can connect it to the router using ethernet or wifi. The android phone is running on the same wifi network. I don't know how to setup wifi capture/monitor on pc (windows 8.1 64-bit)

Please help.