Finding the Fourth Proportional to 16,665.18, 24,985.32 and 10,089.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.18 : 24,985.32 = 10,089.78 : x
2. Step 2: Convert to fraction form
   16,665.18/24,985.32 = 10,089.78/x
3. Step 3: Cross multiply
   16,665.18x = 24,985.32 × 10,089.78
4. Step 4: Simplify right side
   16,665.18x = 252,096,382.03
5. Step 5: Solve for x
   x = 252,096,382.03/16,665.18
6. Step 6: Final answer
   x = 15,127.13