Finding the Fourth Proportional to 17,686.59, 24,407.87 and 9,728.81

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.59 : 24,407.87 = 9,728.81 : x
2. Step 2: Convert to fraction form
   17,686.59/24,407.87 = 9,728.81/x
3. Step 3: Cross multiply
   17,686.59x = 24,407.87 × 9,728.81
4. Step 4: Simplify right side
   17,686.59x = 237,459,450.58
5. Step 5: Solve for x
   x = 237,459,450.58/17,686.59
6. Step 6: Final answer
   x = 13,425.96