Finding the Fourth Proportional to 52,379.31, 72,282.07 and 28,505.48

Step by Step Solution

1. Step 1: Write the proportion equation
   52,379.31 : 72,282.07 = 28,505.48 : x
2. Step 2: Convert to fraction form
   52,379.31/72,282.07 = 28,505.48/x
3. Step 3: Cross multiply
   52,379.31x = 72,282.07 × 28,505.48
4. Step 4: Simplify right side
   52,379.31x = 2,060,434,596.81
5. Step 5: Solve for x
   x = 2,060,434,596.81/52,379.31
6. Step 6: Final answer
   x = 39,336.80