Finding the Fourth Proportional to 17,870.31, 24,660.18 and 9,912.38

Step by Step Solution

1. Step 1: Write the proportion equation
   17,870.31 : 24,660.18 = 9,912.38 : x
2. Step 2: Convert to fraction form
   17,870.31/24,660.18 = 9,912.38/x
3. Step 3: Cross multiply
   17,870.31x = 24,660.18 × 9,912.38
4. Step 4: Simplify right side
   17,870.31x = 244,440,951.73
5. Step 5: Solve for x
   x = 244,440,951.73/17,870.31
6. Step 6: Final answer
   x = 13,678.61