Finding the Fourth Proportional to 52,812.31, 72,882.68 and 28,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,812.31 : 72,882.68 = 28,940.50 : x
2. Step 2: Convert to fraction form
   52,812.31/72,882.68 = 28,940.50/x
3. Step 3: Cross multiply
   52,812.31x = 72,882.68 × 28,940.50
4. Step 4: Simplify right side
   52,812.31x = 2,109,261,200.54
5. Step 5: Solve for x
   x = 2,109,261,200.54/52,812.31
6. Step 6: Final answer
   x = 39,938.82