Answer:
Option 4 - x=6.292
Explanation:
Given : Expression

To find : Solve the expression using change of base formula?
Solution :
Expression

Change of base formula is

Step 1 - Taking log both side in the expression,
Apply logarithmic property,


Step 2 - Taking log one side,

Step 3 - Apply change base formula,

Step 4 - Solve,



Therefore, Option 4 is correct.