Captain Connor Dudley (51) and opener Henry Dall (45) guided SA to 9 /244 from their 50 overs, with Dominic O'Shannessy claimed four wickets for the CA XI.
In response, Victorian duo Paddy Rowe (56) and Mackenzie Harvey (42) got the CA XI off to a strong start before SA hit back to take five wickets in the middle overs to have the CA XI 6/155.
However, skipper Davies (77 not out off 69 balls) and Damien Burrage (35 not out) stayed together until they passed SA’s total with three overs to spare.
NSW Blues rookie Param Uppal (91) and all-rounder Austin Waugh (5/27) starred for NSW Metro in its win over WA, which will play SA for third place on Friday.
The final will begin at 1.30pm at Blundstone Arena on Friday, live-streamed and free-to-view via www.cricket.com.au