Finding the Fourth Proportional to 52,520.59, 72,479.39 and 28,648.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,520.59 : 72,479.39 = 28,648.12 : x
2. Step 2: Convert to fraction form
   52,520.59/72,479.39 = 28,648.12/x
3. Step 3: Cross multiply
   52,520.59x = 72,479.39 × 28,648.12
4. Step 4: Simplify right side
   52,520.59x = 2,076,398,262.25
5. Step 5: Solve for x
   x = 2,076,398,262.25/52,520.59
6. Step 6: Final answer
   x = 39,534.94