Finding the Fourth Proportional to 8,622.78, 12,934.98 and 2,383.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,622.78 : 12,934.98 = 2,383.20 : x
2. Step 2: Convert to fraction form
   8,622.78/12,934.98 = 2,383.20/x
3. Step 3: Cross multiply
   8,622.78x = 12,934.98 × 2,383.20
4. Step 4: Simplify right side
   8,622.78x = 30,826,644.34
5. Step 5: Solve for x
   x = 30,826,644.34/8,622.78
6. Step 6: Final answer
   x = 3,575.02