Finding the Fourth Proportional to 11,382.50, 15,700.18 and 9,887.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,382.50 : 15,700.18 = 9,887.82 : x
2. Step 2: Convert to fraction form
   11,382.50/15,700.18 = 9,887.82/x
3. Step 3: Cross multiply
   11,382.50x = 15,700.18 × 9,887.82
4. Step 4: Simplify right side
   11,382.50x = 155,240,553.81
5. Step 5: Solve for x
   x = 155,240,553.81/11,382.50
6. Step 6: Final answer
   x = 13,638.53