Finding the Fourth Proportional to 17,686.48, 24,406.68 and 9,728.24

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.48 : 24,406.68 = 9,728.24 : x
2. Step 2: Convert to fraction form
   17,686.48/24,406.68 = 9,728.24/x
3. Step 3: Cross multiply
   17,686.48x = 24,406.68 × 9,728.24
4. Step 4: Simplify right side
   17,686.48x = 237,434,040.64
5. Step 5: Solve for x
   x = 237,434,040.64/17,686.48
6. Step 6: Final answer
   x = 13,424.61