Finding the Fourth Proportional to 8,111.51, 12,167.36 and 3,183.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.51 : 12,167.36 = 3,183.47 : x
2. Step 2: Convert to fraction form
   8,111.51/12,167.36 = 3,183.47/x
3. Step 3: Cross multiply
   8,111.51x = 12,167.36 × 3,183.47
4. Step 4: Simplify right side
   8,111.51x = 38,734,348.79
5. Step 5: Solve for x
   x = 38,734,348.79/8,111.51
6. Step 6: Final answer
   x = 4,775.24