Finding the Fourth Proportional to 17,518.71, 24,177.78 and 9,966.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,518.71 : 24,177.78 = 9,966.15 : x
2. Step 2: Convert to fraction form
   17,518.71/24,177.78 = 9,966.15/x
3. Step 3: Cross multiply
   17,518.71x = 24,177.78 × 9,966.15
4. Step 4: Simplify right side
   17,518.71x = 240,959,382.15
5. Step 5: Solve for x
   x = 240,959,382.15/17,518.71
6. Step 6: Final answer
   x = 13,754.40