Finding the Fourth Proportional to 8,822.62, 12,175.43 and 4,789.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,822.62 : 12,175.43 = 4,789.61 : x
2. Step 2: Convert to fraction form
   8,822.62/12,175.43 = 4,789.61/x
3. Step 3: Cross multiply
   8,822.62x = 12,175.43 × 4,789.61
4. Step 4: Simplify right side
   8,822.62x = 58,315,603.69
5. Step 5: Solve for x
   x = 58,315,603.69/8,822.62
6. Step 6: Final answer
   x = 6,609.78