Finding the Fourth Proportional to 52,221.59, 72,065.61 and 28,348.09

Step by Step Solution

1. Step 1: Write the proportion equation
   52,221.59 : 72,065.61 = 28,348.09 : x
2. Step 2: Convert to fraction form
   52,221.59/72,065.61 = 28,348.09/x
3. Step 3: Cross multiply
   52,221.59x = 72,065.61 × 28,348.09
4. Step 4: Simplify right side
   52,221.59x = 2,042,922,359.23
5. Step 5: Solve for x
   x = 2,042,922,359.23/52,221.59
6. Step 6: Final answer
   x = 39,120.27