Finding the Fourth Proportional to 52,086.78, 71,879.94 and 28,213.38

Step by Step Solution

1. Step 1: Write the proportion equation
   52,086.78 : 71,879.94 = 28,213.38 : x
2. Step 2: Convert to fraction form
   52,086.78/71,879.94 = 28,213.38/x
3. Step 3: Cross multiply
   52,086.78x = 71,879.94 × 28,213.38
4. Step 4: Simplify right side
   52,086.78x = 2,027,976,061.60
5. Step 5: Solve for x
   x = 2,027,976,061.60/52,086.78
6. Step 6: Final answer
   x = 38,934.56