Finding the Fourth Proportional to 8,821.20, 12,173.59 and 4,842.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,821.20 : 12,173.59 = 4,842.69 : x
2. Step 2: Convert to fraction form
   8,821.20/12,173.59 = 4,842.69/x
3. Step 3: Cross multiply
   8,821.20x = 12,173.59 × 4,842.69
4. Step 4: Simplify right side
   8,821.20x = 58,952,882.96
5. Step 5: Solve for x
   x = 58,952,882.96/8,821.20
6. Step 6: Final answer
   x = 6,683.09