Finding the Fourth Proportional to 12,142.31, 16,753.41 and 8,101.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,142.31 : 16,753.41 = 8,101.17 : x
2. Step 2: Convert to fraction form
   12,142.31/16,753.41 = 8,101.17/x
3. Step 3: Cross multiply
   12,142.31x = 16,753.41 × 8,101.17
4. Step 4: Simplify right side
   12,142.31x = 135,722,222.49
5. Step 5: Solve for x
   x = 135,722,222.49/12,142.31
6. Step 6: Final answer
   x = 11,177.63