Finding the Fourth Proportional to 52,765.77, 72,816.72 and 28,892.91

Step by Step Solution

1. Step 1: Write the proportion equation
   52,765.77 : 72,816.72 = 28,892.91 : x
2. Step 2: Convert to fraction form
   52,765.77/72,816.72 = 28,892.91/x
3. Step 3: Cross multiply
   52,765.77x = 72,816.72 × 28,892.91
4. Step 4: Simplify right side
   52,765.77x = 2,103,886,937.46
5. Step 5: Solve for x
   x = 2,103,886,937.46/52,765.77
6. Step 6: Final answer
   x = 39,872.19