Finding the Fourth Proportional to 8,767.82, 12,099.30 and 5,229.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,767.82 : 12,099.30 = 5,229.20 : x
2. Step 2: Convert to fraction form
   8,767.82/12,099.30 = 5,229.20/x
3. Step 3: Cross multiply
   8,767.82x = 12,099.30 × 5,229.20
4. Step 4: Simplify right side
   8,767.82x = 63,269,659.56
5. Step 5: Solve for x
   x = 63,269,659.56/8,767.82
6. Step 6: Final answer
   x = 7,216.12