Finding the Fourth Proportional to 7,014.18, 9,679.86 and 3,870.57

Step by Step Solution

1. Step 1: Write the proportion equation
   7,014.18 : 9,679.86 = 3,870.57 : x
2. Step 2: Convert to fraction form
   7,014.18/9,679.86 = 3,870.57/x
3. Step 3: Cross multiply
   7,014.18x = 9,679.86 × 3,870.57
4. Step 4: Simplify right side
   7,014.18x = 37,466,575.72
5. Step 5: Solve for x
   x = 37,466,575.72/7,014.18
6. Step 6: Final answer
   x = 5,341.55