Finding the Fourth Proportional to 4,061.67, 6,086.13 and 3,139.49

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061.67 : 6,086.13 = 3,139.49 : x
2. Step 2: Convert to fraction form
   4,061.67/6,086.13 = 3,139.49/x
3. Step 3: Cross multiply
   4,061.67x = 6,086.13 × 3,139.49
4. Step 4: Simplify right side
   4,061.67x = 19,107,344.27
5. Step 5: Solve for x
   x = 19,107,344.27/4,061.67
6. Step 6: Final answer
   x = 4,704.31