Finding the Fourth Proportional to 17,685.95, 24,406.52 and 9,728.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,685.95 : 24,406.52 = 9,728.10 : x
2. Step 2: Convert to fraction form
   17,685.95/24,406.52 = 9,728.10/x
3. Step 3: Cross multiply
   17,685.95x = 24,406.52 × 9,728.10
4. Step 4: Simplify right side
   17,685.95x = 237,429,018.57
5. Step 5: Solve for x
   x = 237,429,018.57/17,685.95
6. Step 6: Final answer
   x = 13,424.73