Finding the Fourth Proportional to 5,139.79, 7,701.96 and 3,968.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.79 : 7,701.96 = 3,968.03 : x
2. Step 2: Convert to fraction form
   5,139.79/7,701.96 = 3,968.03/x
3. Step 3: Cross multiply
   5,139.79x = 7,701.96 × 3,968.03
4. Step 4: Simplify right side
   5,139.79x = 30,561,569.83
5. Step 5: Solve for x
   x = 30,561,569.83/5,139.79
6. Step 6: Final answer
   x = 5,946.08