Finding the Fourth Proportional to 9,167.72, 12,648.66 and 5,628.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,167.72 : 12,648.66 = 5,628.68 : x
2. Step 2: Convert to fraction form
   9,167.72/12,648.66 = 5,628.68/x
3. Step 3: Cross multiply
   9,167.72x = 12,648.66 × 5,628.68
4. Step 4: Simplify right side
   9,167.72x = 71,195,259.57
5. Step 5: Solve for x
   x = 71,195,259.57/9,167.72
6. Step 6: Final answer
   x = 7,765.86