Finding the Fourth Proportional to 9,167.27, 12,648.60 and 5,390.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,167.27 : 12,648.60 = 5,390.12 : x
2. Step 2: Convert to fraction form
   9,167.27/12,648.60 = 5,390.12/x
3. Step 3: Cross multiply
   9,167.27x = 12,648.60 × 5,390.12
4. Step 4: Simplify right side
   9,167.27x = 68,177,503.45
5. Step 5: Solve for x
   x = 68,177,503.45/9,167.27
6. Step 6: Final answer
   x = 7,437.06