Finding the Fourth Proportional to 4,443.29, 6,131.79 and 3,100.85

Step by Step Solution

1. Step 1: Write the proportion equation
   4,443.29 : 6,131.79 = 3,100.85 : x
2. Step 2: Convert to fraction form
   4,443.29/6,131.79 = 3,100.85/x
3. Step 3: Cross multiply
   4,443.29x = 6,131.79 × 3,100.85
4. Step 4: Simplify right side
   4,443.29x = 19,013,776.35
5. Step 5: Solve for x
   x = 19,013,776.35/4,443.29
6. Step 6: Final answer
   x = 4,279.21