Finding the Fourth Proportional to 7,040.16, 9,715.50 and 3,896.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,040.16 : 9,715.50 = 3,896.10 : x
2. Step 2: Convert to fraction form
   7,040.16/9,715.50 = 3,896.10/x
3. Step 3: Cross multiply
   7,040.16x = 9,715.50 × 3,896.10
4. Step 4: Simplify right side
   7,040.16x = 37,852,559.55
5. Step 5: Solve for x
   x = 37,852,559.55/7,040.16
6. Step 6: Final answer
   x = 5,376.66