Finding the Fourth Proportional to 17,685.76, 24,406.34 and 9,728.52

Step by Step Solution

1. Step 1: Write the proportion equation
   17,685.76 : 24,406.34 = 9,728.52 : x
2. Step 2: Convert to fraction form
   17,685.76/24,406.34 = 9,728.52/x
3. Step 3: Cross multiply
   17,685.76x = 24,406.34 × 9,728.52
4. Step 4: Simplify right side
   17,685.76x = 237,437,566.82
5. Step 5: Solve for x
   x = 237,437,566.82/17,685.76
6. Step 6: Final answer
   x = 13,425.35