Finding the Fourth Proportional to 8,111.93, 12,167.81 and 2,565.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.93 : 12,167.81 = 2,565.28 : x
2. Step 2: Convert to fraction form
   8,111.93/12,167.81 = 2,565.28/x
3. Step 3: Cross multiply
   8,111.93x = 12,167.81 × 2,565.28
4. Step 4: Simplify right side
   8,111.93x = 31,213,797.63
5. Step 5: Solve for x
   x = 31,213,797.63/8,111.93
6. Step 6: Final answer
   x = 3,847.89