Finding the Fourth Proportional to 17,306.73, 25,951.86 and 8,978.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,306.73 : 25,951.86 = 8,978.40 : x
2. Step 2: Convert to fraction form
   17,306.73/25,951.86 = 8,978.40/x
3. Step 3: Cross multiply
   17,306.73x = 25,951.86 × 8,978.40
4. Step 4: Simplify right side
   17,306.73x = 233,006,179.82
5. Step 5: Solve for x
   x = 233,006,179.82/17,306.73
6. Step 6: Final answer
   x = 13,463.33