Finding the Fourth Proportional to 52,697.52, 72,721.56 and 28,824.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,697.52 : 72,721.56 = 28,824.12 : x
2. Step 2: Convert to fraction form
   52,697.52/72,721.56 = 28,824.12/x
3. Step 3: Cross multiply
   52,697.52x = 72,721.56 × 28,824.12
4. Step 4: Simplify right side
   52,697.52x = 2,096,134,972.03
5. Step 5: Solve for x
   x = 2,096,134,972.03/52,697.52
6. Step 6: Final answer
   x = 39,776.73