Finding the Fourth Proportional to 8,574.75, 12,851.50 and 5,061.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,574.75 : 12,851.50 = 5,061.20 : x
2. Step 2: Convert to fraction form
   8,574.75/12,851.50 = 5,061.20/x
3. Step 3: Cross multiply
   8,574.75x = 12,851.50 × 5,061.20
4. Step 4: Simplify right side
   8,574.75x = 65,044,011.80
5. Step 5: Solve for x
   x = 65,044,011.80/8,574.75
6. Step 6: Final answer
   x = 7,585.53