Finding the Fourth Proportional to 12,107.88, 16,710.42 and 7,391.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,107.88 : 16,710.42 = 7,391.16 : x
2. Step 2: Convert to fraction form
   12,107.88/16,710.42 = 7,391.16/x
3. Step 3: Cross multiply
   12,107.88x = 16,710.42 × 7,391.16
4. Step 4: Simplify right side
   12,107.88x = 123,509,387.89
5. Step 5: Solve for x
   x = 123,509,387.89/12,107.88
6. Step 6: Final answer
   x = 10,200.74