Finding the Fourth Proportional to 52,359.25, 72,256.50 and 28,485.91

Step by Step Solution

1. Step 1: Write the proportion equation
   52,359.25 : 72,256.50 = 28,485.91 : x
2. Step 2: Convert to fraction form
   52,359.25/72,256.50 = 28,485.91/x
3. Step 3: Cross multiply
   52,359.25x = 72,256.50 × 28,485.91
4. Step 4: Simplify right side
   52,359.25x = 2,058,292,155.92
5. Step 5: Solve for x
   x = 2,058,292,155.92/52,359.25
6. Step 6: Final answer
   x = 39,310.96