Finding the Fourth Proportional to 8,613.82, 12,922.77 and 2,770.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,613.82 : 12,922.77 = 2,770.42 : x
2. Step 2: Convert to fraction form
   8,613.82/12,922.77 = 2,770.42/x
3. Step 3: Cross multiply
   8,613.82x = 12,922.77 × 2,770.42
4. Step 4: Simplify right side
   8,613.82x = 35,801,500.46
5. Step 5: Solve for x
   x = 35,801,500.46/8,613.82
6. Step 6: Final answer
   x = 4,156.29