Finding the Fourth Proportional to 8,105.49, 11,187.32 and 5,119.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.49 : 11,187.32 = 5,119.43 : x
2. Step 2: Convert to fraction form
   8,105.49/11,187.32 = 5,119.43/x
3. Step 3: Cross multiply
   8,105.49x = 11,187.32 × 5,119.43
4. Step 4: Simplify right side
   8,105.49x = 57,272,620.09
5. Step 5: Solve for x
   x = 57,272,620.09/8,105.49
6. Step 6: Final answer
   x = 7,065.90