Finding the Fourth Proportional to 8,738.35, 12,067.49 and 7,472.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,738.35 : 12,067.49 = 7,472.09 : x
2. Step 2: Convert to fraction form
   8,738.35/12,067.49 = 7,472.09/x
3. Step 3: Cross multiply
   8,738.35x = 12,067.49 × 7,472.09
4. Step 4: Simplify right side
   8,738.35x = 90,169,371.35
5. Step 5: Solve for x
   x = 90,169,371.35/8,738.35
6. Step 6: Final answer
   x = 10,318.81