Finding the Fourth Proportional to 9,167.39, 12,650.61 and 5,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,167.39 : 12,650.61 = 5,188.72 : x
2. Step 2: Convert to fraction form
   9,167.39/12,650.61 = 5,188.72/x
3. Step 3: Cross multiply
   9,167.39x = 12,650.61 × 5,188.72
4. Step 4: Simplify right side
   9,167.39x = 65,640,508.39
5. Step 5: Solve for x
   x = 65,640,508.39/9,167.39
6. Step 6: Final answer
   x = 7,160.22