Finding the Fourth Proportional to 22,906.76, 34,354.78 and 12,915.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,906.76 : 34,354.78 = 12,915.82 : x
2. Step 2: Convert to fraction form
   22,906.76/34,354.78 = 12,915.82/x
3. Step 3: Cross multiply
   22,906.76x = 34,354.78 × 12,915.82
4. Step 4: Simplify right side
   22,906.76x = 443,720,036.44
5. Step 5: Solve for x
   x = 443,720,036.44/22,906.76
6. Step 6: Final answer
   x = 19,370.70