Finding the Fourth Proportional to 7,040.50, 9,715.89 and 3,897.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,040.50 : 9,715.89 = 3,897.16 : x
2. Step 2: Convert to fraction form
   7,040.50/9,715.89 = 3,897.16/x
3. Step 3: Cross multiply
   7,040.50x = 9,715.89 × 3,897.16
4. Step 4: Simplify right side
   7,040.50x = 37,864,377.87
5. Step 5: Solve for x
   x = 37,864,377.87/7,040.50
6. Step 6: Final answer
   x = 5,378.08