Finding the Fourth Proportional to 8,105.31, 12,160.02 and 2,261.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.31 : 12,160.02 = 2,261.91 : x
2. Step 2: Convert to fraction form
   8,105.31/12,160.02 = 2,261.91/x
3. Step 3: Cross multiply
   8,105.31x = 12,160.02 × 2,261.91
4. Step 4: Simplify right side
   8,105.31x = 27,504,870.84
5. Step 5: Solve for x
   x = 27,504,870.84/8,105.31
6. Step 6: Final answer
   x = 3,393.44