Finding the Fourth Proportional to 52,521.59, 72,480.77 and 28,649.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,521.59 : 72,480.77 = 28,649.12 : x
2. Step 2: Convert to fraction form
   52,521.59/72,480.77 = 28,649.12/x
3. Step 3: Cross multiply
   52,521.59x = 72,480.77 × 28,649.12
4. Step 4: Simplify right side
   52,521.59x = 2,076,509,771.77
5. Step 5: Solve for x
   x = 2,076,509,771.77/52,521.59
6. Step 6: Final answer
   x = 39,536.31