Finding the Fourth Proportional to 17,686.25, 24,406.63 and 9,728.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.25 : 24,406.63 = 9,728.31 : x
2. Step 2: Convert to fraction form
   17,686.25/24,406.63 = 9,728.31/x
3. Step 3: Cross multiply
   17,686.25x = 24,406.63 × 9,728.31
4. Step 4: Simplify right side
   17,686.25x = 237,435,238.37
5. Step 5: Solve for x
   x = 237,435,238.37/17,686.25
6. Step 6: Final answer
   x = 13,424.85