Finding the Fourth Proportional to 8,872.29, 12,249.46 and 5,519.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,872.29 : 12,249.46 = 5,519.67 : x
2. Step 2: Convert to fraction form
   8,872.29/12,249.46 = 5,519.67/x
3. Step 3: Cross multiply
   8,872.29x = 12,249.46 × 5,519.67
4. Step 4: Simplify right side
   8,872.29x = 67,612,976.88
5. Step 5: Solve for x
   x = 67,612,976.88/8,872.29
6. Step 6: Final answer
   x = 7,620.69