Finding the Fourth Proportional to 8,105.72, 11,185.89 and 4,379.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.72 : 11,185.89 = 4,379.72 : x
2. Step 2: Convert to fraction form
   8,105.72/11,185.89 = 4,379.72/x
3. Step 3: Cross multiply
   8,105.72x = 11,185.89 × 4,379.72
4. Step 4: Simplify right side
   8,105.72x = 48,991,010.22
5. Step 5: Solve for x
   x = 48,991,010.22/8,105.72
6. Step 6: Final answer
   x = 6,044.01