Finding the Fourth Proportional to 52,618.48, 72,610.86 and 28,740.76

Step by Step Solution

1. Step 1: Write the proportion equation
   52,618.48 : 72,610.86 = 28,740.76 : x
2. Step 2: Convert to fraction form
   52,618.48/72,610.86 = 28,740.76/x
3. Step 3: Cross multiply
   52,618.48x = 72,610.86 × 28,740.76
4. Step 4: Simplify right side
   52,618.48x = 2,086,891,300.65
5. Step 5: Solve for x
   x = 2,086,891,300.65/52,618.48
6. Step 6: Final answer
   x = 39,660.81