Finding the Fourth Proportional to 23,139.46, 34,711.92 and 8,355.34

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139.46 : 34,711.92 = 8,355.34 : x
2. Step 2: Convert to fraction form
   23,139.46/34,711.92 = 8,355.34/x
3. Step 3: Cross multiply
   23,139.46x = 34,711.92 × 8,355.34
4. Step 4: Simplify right side
   23,139.46x = 290,029,893.65
5. Step 5: Solve for x
   x = 290,029,893.65/23,139.46
6. Step 6: Final answer
   x = 12,534.00