Finding the Fourth Proportional to 22,978.89, 34,463.21 and 8,934.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,978.89 : 34,463.21 = 8,934.30 : x
2. Step 2: Convert to fraction form
   22,978.89/34,463.21 = 8,934.30/x
3. Step 3: Cross multiply
   22,978.89x = 34,463.21 × 8,934.30
4. Step 4: Simplify right side
   22,978.89x = 307,904,612.43
5. Step 5: Solve for x
   x = 307,904,612.43/22,978.89
6. Step 6: Final answer
   x = 13,399.46