Finding the Fourth Proportional to 17,686.22, 24,407.34 and 9,728.42

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.22 : 24,407.34 = 9,728.42 : x
2. Step 2: Convert to fraction form
   17,686.22/24,407.34 = 9,728.42/x
3. Step 3: Cross multiply
   17,686.22x = 24,407.34 × 9,728.42
4. Step 4: Simplify right side
   17,686.22x = 237,444,854.60
5. Step 5: Solve for x
   x = 237,444,854.60/17,686.22
6. Step 6: Final answer
   x = 13,425.42