Finding the Fourth Proportional to 52,708.62, 72,739.38 and 28,836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,708.62 : 72,739.38 = 28,836.72 : x
2. Step 2: Convert to fraction form
   52,708.62/72,739.38 = 28,836.72/x
3. Step 3: Cross multiply
   52,708.62x = 72,739.38 × 28,836.72
4. Step 4: Simplify right side
   52,708.62x = 2,097,565,134.03
5. Step 5: Solve for x
   x = 2,097,565,134.03/52,708.62
6. Step 6: Final answer
   x = 39,795.49