Finding the Fourth Proportional to 7,014.78, 9,680.43 and 3,870.97

Step by Step Solution

1. Step 1: Write the proportion equation
   7,014.78 : 9,680.43 = 3,870.97 : x
2. Step 2: Convert to fraction form
   7,014.78/9,680.43 = 3,870.97/x
3. Step 3: Cross multiply
   7,014.78x = 9,680.43 × 3,870.97
4. Step 4: Simplify right side
   7,014.78x = 37,472,605.71
5. Step 5: Solve for x
   x = 37,472,605.71/7,014.78
6. Step 6: Final answer
   x = 5,341.95