Finding the Fourth Proportional to 11,654.29, 17,456.78 and 9,423.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,654.29 : 17,456.78 = 9,423.55 : x
2. Step 2: Convert to fraction form
   11,654.29/17,456.78 = 9,423.55/x
3. Step 3: Cross multiply
   11,654.29x = 17,456.78 × 9,423.55
4. Step 4: Simplify right side
   11,654.29x = 164,504,839.17
5. Step 5: Solve for x
   x = 164,504,839.17/11,654.29
6. Step 6: Final answer
   x = 14,115.39