Finding the Fourth Proportional to 52,818.57, 72,891.32 and 28,946.75

Step by Step Solution

1. Step 1: Write the proportion equation
   52,818.57 : 72,891.32 = 28,946.75 : x
2. Step 2: Convert to fraction form
   52,818.57/72,891.32 = 28,946.75/x
3. Step 3: Cross multiply
   52,818.57x = 72,891.32 × 28,946.75
4. Step 4: Simplify right side
   52,818.57x = 2,109,966,308.02
5. Step 5: Solve for x
   x = 2,109,966,308.02/52,818.57
6. Step 6: Final answer
   x = 39,947.43