Finding the Fourth Proportional to 5,086.31, 7,016.77 and 2,988.95

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.31 : 7,016.77 = 2,988.95 : x
2. Step 2: Convert to fraction form
   5,086.31/7,016.77 = 2,988.95/x
3. Step 3: Cross multiply
   5,086.31x = 7,016.77 × 2,988.95
4. Step 4: Simplify right side
   5,086.31x = 20,972,774.69
5. Step 5: Solve for x
   x = 20,972,774.69/5,086.31
6. Step 6: Final answer
   x = 4,123.38