Finding the Fourth Proportional to 7,014.65, 9,680.10 and 3,870.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,014.65 : 9,680.10 = 3,870.86 : x
2. Step 2: Convert to fraction form
   7,014.65/9,680.10 = 3,870.86/x
3. Step 3: Cross multiply
   7,014.65x = 9,680.10 × 3,870.86
4. Step 4: Simplify right side
   7,014.65x = 37,470,311.89
5. Step 5: Solve for x
   x = 37,470,311.89/7,014.65
6. Step 6: Final answer
   x = 5,341.72