Hi all I have the following equation (1+g)^4=1.3065 how do I get the value of g?

g = sqrt(sqrt(1.3065)) - 1 = 0.069122214...
You can also write this:
1 + g = 1.3065^(1/4) | - 1
g = 0.069122214...
test:
(0.069122214 + 1)^4 = 1.3065