Finding the Fourth Proportional to 4,086.80, 6,128.12 and 2,006.96

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.80 : 6,128.12 = 2,006.96 : x
2. Step 2: Convert to fraction form
   4,086.80/6,128.12 = 2,006.96/x
3. Step 3: Cross multiply
   4,086.80x = 6,128.12 × 2,006.96
4. Step 4: Simplify right side
   4,086.80x = 12,298,891.72
5. Step 5: Solve for x
   x = 12,298,891.72/4,086.80
6. Step 6: Final answer
   x = 3,009.42