Finding the Fourth Proportional to 22,978.22, 34,418.90 and 10,508.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,978.22 : 34,418.90 = 10,508.74 : x
2. Step 2: Convert to fraction form
   22,978.22/34,418.90 = 10,508.74/x
3. Step 3: Cross multiply
   22,978.22x = 34,418.90 × 10,508.74
4. Step 4: Simplify right side
   22,978.22x = 361,699,304.69
5. Step 5: Solve for x
   x = 361,699,304.69/22,978.22
6. Step 6: Final answer
   x = 15,740.96