Finding the Fourth Proportional to 8,442.84, 12,658.77 and 2,819.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,442.84 : 12,658.77 = 2,819.82 : x
2. Step 2: Convert to fraction form
   8,442.84/12,658.77 = 2,819.82/x
3. Step 3: Cross multiply
   8,442.84x = 12,658.77 × 2,819.82
4. Step 4: Simplify right side
   8,442.84x = 35,695,452.82
5. Step 5: Solve for x
   x = 35,695,452.82/8,442.84
6. Step 6: Final answer
   x = 4,227.90