How to find SharePoint Central Administration Port

I support several clients SharePoint (2007, 20010, and 2013) environments.  Most of the time when I go to a new client they do not know the SP Central Administration port that is used.  Fortunately we have IIS.  Using Windows Admin tools, open the IIS manager;

Next expand the server name (+) under connections and then expand sites (+):

Next, click on SharePoint Central Administration under connections.  You will see the port number listed on the left side of the page under Actions.  You can click this link to open SP Central Administration.