Finding the Fourth Proportional to 52,651.28, 72,660.72 and 28,779.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52,651.28 : 72,660.72 = 28,779.56 : x
2. Step 2: Convert to fraction form
   52,651.28/72,660.72 = 28,779.56/x
3. Step 3: Cross multiply
   52,651.28x = 72,660.72 × 28,779.56
4. Step 4: Simplify right side
   52,651.28x = 2,091,143,550.88
5. Step 5: Solve for x
   x = 2,091,143,550.88/52,651.28
6. Step 6: Final answer
   x = 39,716.86