Finding the Fourth Proportional to 8,747.39, 12,067.55 and 5,913.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.39 : 12,067.55 = 5,913.72 : x
2. Step 2: Convert to fraction form
   8,747.39/12,067.55 = 5,913.72/x
3. Step 3: Cross multiply
   8,747.39x = 12,067.55 × 5,913.72
4. Step 4: Simplify right side
   8,747.39x = 71,364,082.22
5. Step 5: Solve for x
   x = 71,364,082.22/8,747.39
6. Step 6: Final answer
   x = 8,158.33