Finding the Fourth Proportional to 9,086.96, 12,542.58 and 5,311

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.96 : 12,542.58 = 5,311 : x
2. Step 2: Convert to fraction form
   9,086.96/12,542.58 = 5,311/x
3. Step 3: Cross multiply
   9,086.96x = 12,542.58 × 5,311
4. Step 4: Simplify right side
   9,086.96x = 66,613,642.38
5. Step 5: Solve for x
   x = 66,613,642.38/9,086.96
6. Step 6: Final answer
   x = 7,330.69