Finding the Fourth Proportional to 17,686.63, 24,407.55 and 9,729.39

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.63 : 24,407.55 = 9,729.39 : x
2. Step 2: Convert to fraction form
   17,686.63/24,407.55 = 9,729.39/x
3. Step 3: Cross multiply
   17,686.63x = 24,407.55 × 9,729.39
4. Step 4: Simplify right side
   17,686.63x = 237,470,572.89
5. Step 5: Solve for x
   x = 237,470,572.89/17,686.63
6. Step 6: Final answer
   x = 13,426.56