Finding the Fourth Proportional to 31,930.56, 44,107.20 and 28,949.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,930.56 : 44,107.20 = 28,949.76 : x
2. Step 2: Convert to fraction form
   31,930.56/44,107.20 = 28,949.76/x
3. Step 3: Cross multiply
   31,930.56x = 44,107.20 × 28,949.76
4. Step 4: Simplify right side
   31,930.56x = 1,276,892,854.27
5. Step 5: Solve for x
   x = 1,276,892,854.27/31,930.56
6. Step 6: Final answer
   x = 39,989.68