Finding the Fourth Proportional to 14,124.59, 21,188.12 and 5,240.02

Step by Step Solution

1. Step 1: Write the proportion equation
   14,124.59 : 21,188.12 = 5,240.02 : x
2. Step 2: Convert to fraction form
   14,124.59/21,188.12 = 5,240.02/x
3. Step 3: Cross multiply
   14,124.59x = 21,188.12 × 5,240.02
4. Step 4: Simplify right side
   14,124.59x = 111,026,132.69
5. Step 5: Solve for x
   x = 111,026,132.69/14,124.59
6. Step 6: Final answer
   x = 7,860.49