Finding the Fourth Proportional to 52,721.32, 72,754.22 and 28,847.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,721.32 : 72,754.22 = 28,847.72 : x
2. Step 2: Convert to fraction form
   52,721.32/72,754.22 = 28,847.72/x
3. Step 3: Cross multiply
   52,721.32x = 72,754.22 × 28,847.72
4. Step 4: Simplify right side
   52,721.32x = 2,098,793,367.38
5. Step 5: Solve for x
   x = 2,098,793,367.38/52,721.32
6. Step 6: Final answer
   x = 39,809.20