Finding the Fourth Proportional to 52,720.32, 72,752.84 and 28,846.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,720.32 : 72,752.84 = 28,846.72 : x
2. Step 2: Convert to fraction form
   52,720.32/72,752.84 = 28,846.72/x
3. Step 3: Cross multiply
   52,720.32x = 72,752.84 × 28,846.72
4. Step 4: Simplify right side
   52,720.32x = 2,098,680,804.68
5. Step 5: Solve for x
   x = 2,098,680,804.68/52,720.32
6. Step 6: Final answer
   x = 39,807.82