Finding the Fourth Proportional to 9,342.38, 12,892.76 and 5,150.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,342.38 : 12,892.76 = 5,150.90 : x
2. Step 2: Convert to fraction form
   9,342.38/12,892.76 = 5,150.90/x
3. Step 3: Cross multiply
   9,342.38x = 12,892.76 × 5,150.90
4. Step 4: Simplify right side
   9,342.38x = 66,409,227.27
5. Step 5: Solve for x
   x = 66,409,227.27/9,342.38
6. Step 6: Final answer
   x = 7,108.39