Finding the Fourth Proportional to 52,458.72, 72,393 and 28,585.37

Step by Step Solution

1. Step 1: Write the proportion equation
   52,458.72 : 72,393 = 28,585.37 : x
2. Step 2: Convert to fraction form
   52,458.72/72,393 = 28,585.37/x
3. Step 3: Cross multiply
   52,458.72x = 72,393 × 28,585.37
4. Step 4: Simplify right side
   52,458.72x = 2,069,380,328.45
5. Step 5: Solve for x
   x = 2,069,380,328.45/52,458.72
6. Step 6: Final answer
   x = 39,447.79