Finding the Fourth Proportional to 12,411.50, 17,128.68 and 7,698.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.50 : 17,128.68 = 7,698.92 : x
2. Step 2: Convert to fraction form
   12,411.50/17,128.68 = 7,698.92/x
3. Step 3: Cross multiply
   12,411.50x = 17,128.68 × 7,698.92
4. Step 4: Simplify right side
   12,411.50x = 131,872,337.03
5. Step 5: Solve for x
   x = 131,872,337.03/12,411.50
6. Step 6: Final answer
   x = 10,625.01