Finding the Fourth Proportional to 52,689.89, 72,713.58 and 28,818.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,689.89 : 72,713.58 = 28,818.18 : x
2. Step 2: Convert to fraction form
   52,689.89/72,713.58 = 28,818.18/x
3. Step 3: Cross multiply
   52,689.89x = 72,713.58 × 28,818.18
4. Step 4: Simplify right side
   52,689.89x = 2,095,472,673.32
5. Step 5: Solve for x
   x = 2,095,472,673.32/52,689.89
6. Step 6: Final answer
   x = 39,769.92