Finding the Fourth Proportional to 52,663.86, 72,676.10 and 28,790.52

Step by Step Solution

1. Step 1: Write the proportion equation
   52,663.86 : 72,676.10 = 28,790.52 : x
2. Step 2: Convert to fraction form
   52,663.86/72,676.10 = 28,790.52/x
3. Step 3: Cross multiply
   52,663.86x = 72,676.10 × 28,790.52
4. Step 4: Simplify right side
   52,663.86x = 2,092,382,710.57
5. Step 5: Solve for x
   x = 2,092,382,710.57/52,663.86
6. Step 6: Final answer
   x = 39,730.90