Finding the Fourth Proportional to 8,348.94, 12,514.16 and 5,571.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,348.94 : 12,514.16 = 5,571.78 : x
2. Step 2: Convert to fraction form
   8,348.94/12,514.16 = 5,571.78/x
3. Step 3: Cross multiply
   8,348.94x = 12,514.16 × 5,571.78
4. Step 4: Simplify right side
   8,348.94x = 69,726,118.55
5. Step 5: Solve for x
   x = 69,726,118.55/8,348.94
6. Step 6: Final answer
   x = 8,351.49