Finding the Fourth Proportional to 7,014.24, 9,680.40 and 3,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,014.24 : 9,680.40 = 3,870.72 : x
2. Step 2: Convert to fraction form
   7,014.24/9,680.40 = 3,870.72/x
3. Step 3: Cross multiply
   7,014.24x = 9,680.40 × 3,870.72
4. Step 4: Simplify right side
   7,014.24x = 37,470,117.89
5. Step 5: Solve for x
   x = 37,470,117.89/7,014.24
6. Step 6: Final answer
   x = 5,342.01