Finding the Fourth Proportional to 8,519.69, 12,782.57 and 3,255.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,519.69 : 12,782.57 = 3,255.10 : x
2. Step 2: Convert to fraction form
   8,519.69/12,782.57 = 3,255.10/x
3. Step 3: Cross multiply
   8,519.69x = 12,782.57 × 3,255.10
4. Step 4: Simplify right side
   8,519.69x = 41,608,543.61
5. Step 5: Solve for x
   x = 41,608,543.61/8,519.69
6. Step 6: Final answer
   x = 4,883.81