Finding the Fourth Proportional to 4,086.27, 5,631.39 and 2,905.29

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.27 : 5,631.39 = 2,905.29 : x
2. Step 2: Convert to fraction form
   4,086.27/5,631.39 = 2,905.29/x
3. Step 3: Cross multiply
   4,086.27x = 5,631.39 × 2,905.29
4. Step 4: Simplify right side
   4,086.27x = 16,360,821.05
5. Step 5: Solve for x
   x = 16,360,821.05/4,086.27
6. Step 6: Final answer
   x = 4,003.85