Finding the Fourth Proportional to 52,260, 72,118.80 and 28,708

Step by Step Solution

1. Step 1: Write the proportion equation
   52,260 : 72,118.80 = 28,708 : x
2. Step 2: Convert to fraction form
   52,260/72,118.80 = 28,708/x
3. Step 3: Cross multiply
   52,260x = 72,118.80 × 28,708
4. Step 4: Simplify right side
   52,260x = 2,070,386,510.40
5. Step 5: Solve for x
   x = 2,070,386,510.40/52,260
6. Step 6: Final answer
   x = 39,617.04