Finding the Fourth Proportional to 10,899.52, 15,037.47 and 7,124.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.52 : 15,037.47 = 7,124.86 : x
2. Step 2: Convert to fraction form
   10,899.52/15,037.47 = 7,124.86/x
3. Step 3: Cross multiply
   10,899.52x = 15,037.47 × 7,124.86
4. Step 4: Simplify right side
   10,899.52x = 107,139,868.50
5. Step 5: Solve for x
   x = 107,139,868.50/10,899.52
6. Step 6: Final answer
   x = 9,829.78