Finding the Fourth Proportional to 7,082.78, 10,615.94 and 3,964.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,082.78 : 10,615.94 = 3,964.18 : x
2. Step 2: Convert to fraction form
   7,082.78/10,615.94 = 3,964.18/x
3. Step 3: Cross multiply
   7,082.78x = 10,615.94 × 3,964.18
4. Step 4: Simplify right side
   7,082.78x = 42,083,497.03
5. Step 5: Solve for x
   x = 42,083,497.03/7,082.78
6. Step 6: Final answer
   x = 5,941.66