Finding the Fourth Proportional to 52,436.20, 72,361.58 and 28,562.87

Step by Step Solution

1. Step 1: Write the proportion equation
   52,436.20 : 72,361.58 = 28,562.87 : x
2. Step 2: Convert to fraction form
   52,436.20/72,361.58 = 28,562.87/x
3. Step 3: Cross multiply
   52,436.20x = 72,361.58 × 28,562.87
4. Step 4: Simplify right side
   52,436.20x = 2,066,854,650.83
5. Step 5: Solve for x
   x = 2,066,854,650.83/52,436.20
6. Step 6: Final answer
   x = 39,416.56