Finding the Fourth Proportional to 17,542.71, 24,209.55 and 9,990.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,542.71 : 24,209.55 = 9,990.18 : x
2. Step 2: Convert to fraction form
   17,542.71/24,209.55 = 9,990.18/x
3. Step 3: Cross multiply
   17,542.71x = 24,209.55 × 9,990.18
4. Step 4: Simplify right side
   17,542.71x = 241,857,762.22
5. Step 5: Solve for x
   x = 241,857,762.22/17,542.71
6. Step 6: Final answer
   x = 13,786.80