Finding the Fourth Proportional to 50,574, 69,792.12 and 28,218

Step by Step Solution

1. Step 1: Write the proportion equation
   50,574 : 69,792.12 = 28,218 : x
2. Step 2: Convert to fraction form
   50,574/69,792.12 = 28,218/x
3. Step 3: Cross multiply
   50,574x = 69,792.12 × 28,218
4. Step 4: Simplify right side
   50,574x = 1,969,394,042.16
5. Step 5: Solve for x
   x = 1,969,394,042.16/50,574
6. Step 6: Final answer
   x = 38,940.84