Finding the Fourth Proportional to 11,144.92, 15,379.78 and 6,109

Step by Step Solution

1. Step 1: Write the proportion equation
   11,144.92 : 15,379.78 = 6,109 : x
2. Step 2: Convert to fraction form
   11,144.92/15,379.78 = 6,109/x
3. Step 3: Cross multiply
   11,144.92x = 15,379.78 × 6,109
4. Step 4: Simplify right side
   11,144.92x = 93,955,076.02
5. Step 5: Solve for x
   x = 93,955,076.02/11,144.92
6. Step 6: Final answer
   x = 8,430.31