Finding the Fourth Proportional to 8,105.11, 11,194.37 and 5,411.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.11 : 11,194.37 = 5,411.64 : x
2. Step 2: Convert to fraction form
   8,105.11/11,194.37 = 5,411.64/x
3. Step 3: Cross multiply
   8,105.11x = 11,194.37 × 5,411.64
4. Step 4: Simplify right side
   8,105.11x = 60,579,900.47
5. Step 5: Solve for x
   x = 60,579,900.47/8,105.11
6. Step 6: Final answer
   x = 7,474.28