Finding the Fourth Proportional to 22,930.47, 34,399.12 and 8,138.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,930.47 : 34,399.12 = 8,138.15 : x
2. Step 2: Convert to fraction form
   22,930.47/34,399.12 = 8,138.15/x
3. Step 3: Cross multiply
   22,930.47x = 34,399.12 × 8,138.15
4. Step 4: Simplify right side
   22,930.47x = 279,945,042.15
5. Step 5: Solve for x
   x = 279,945,042.15/22,930.47
6. Step 6: Final answer
   x = 12,208.43