Finding the Fourth Proportional to 17,654.56, 26,478.34 and 8,760.61

Step by Step Solution

1. Step 1: Write the proportion equation
   17,654.56 : 26,478.34 = 8,760.61 : x
2. Step 2: Convert to fraction form
   17,654.56/26,478.34 = 8,760.61/x
3. Step 3: Cross multiply
   17,654.56x = 26,478.34 × 8,760.61
4. Step 4: Simplify right side
   17,654.56x = 231,966,321.72
5. Step 5: Solve for x
   x = 231,966,321.72/17,654.56
6. Step 6: Final answer
   x = 13,139.18