Finding the Fourth Proportional to 5,086.30, 7,025.82 and 3,905.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.30 : 7,025.82 = 3,905.89 : x
2. Step 2: Convert to fraction form
   5,086.30/7,025.82 = 3,905.89/x
3. Step 3: Cross multiply
   5,086.30x = 7,025.82 × 3,905.89
4. Step 4: Simplify right side
   5,086.30x = 27,442,080.08
5. Step 5: Solve for x
   x = 27,442,080.08/5,086.30
6. Step 6: Final answer
   x = 5,395.29