Finding the Fourth Proportional to 8,613.72, 12,922.56 and 3,067.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,613.72 : 12,922.56 = 3,067.38 : x
2. Step 2: Convert to fraction form
   8,613.72/12,922.56 = 3,067.38/x
3. Step 3: Cross multiply
   8,613.72x = 12,922.56 × 3,067.38
4. Step 4: Simplify right side
   8,613.72x = 39,638,402.09
5. Step 5: Solve for x
   x = 39,638,402.09/8,613.72
6. Step 6: Final answer
   x = 4,601.78