Got no idea how to step through this [ maybe someone else does ??? ]
WolframAlpha gives the answer as X ≈ 0.501001460646335
https://www.wolframalpha.com/input/?i=5.52+%3D+-ln(-ln+-+(1-(1%2FX)))
Solve for X given : 5.52 = -ln( -ln( -(1-1/X) ))
5.52=−ln(−ln(−(1−1x)))5.52=−ln(−ln(1x−1))−5.52=ln(−ln(1x−1))|e()e−5.52=−ln(1x−1)−e−5.52=ln(1x−1)|e()e(−e−5.52)=1x−11+e(−e−5.52)=1x11+e(−e−5.52)=xx=11+e(−e−5.52)x=11+e(−0.00400584794)x=11+0.99600216476x=11.99600216476x=0.50100146065