Finding the Fourth Proportional to 8,821.62, 12,168.81 and 5,282.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,821.62 : 12,168.81 = 5,282.82 : x
2. Step 2: Convert to fraction form
   8,821.62/12,168.81 = 5,282.82/x
3. Step 3: Cross multiply
   8,821.62x = 12,168.81 × 5,282.82
4. Step 4: Simplify right side
   8,821.62x = 64,285,632.84
5. Step 5: Solve for x
   x = 64,285,632.84/8,821.62
6. Step 6: Final answer
   x = 7,287.28