Finding the Fourth Proportional to 8,401.83, 12,586.33 and 5,106.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,401.83 : 12,586.33 = 5,106.75 : x
2. Step 2: Convert to fraction form
   8,401.83/12,586.33 = 5,106.75/x
3. Step 3: Cross multiply
   8,401.83x = 12,586.33 × 5,106.75
4. Step 4: Simplify right side
   8,401.83x = 64,275,240.73
5. Step 5: Solve for x
   x = 64,275,240.73/8,401.83
6. Step 6: Final answer
   x = 7,650.15