Finding the Fourth Proportional to 7,013.97, 9,679.23 and 3,870.17

Step by Step Solution

1. Step 1: Write the proportion equation
   7,013.97 : 9,679.23 = 3,870.17 : x
2. Step 2: Convert to fraction form
   7,013.97/9,679.23 = 3,870.17/x
3. Step 3: Cross multiply
   7,013.97x = 9,679.23 × 3,870.17
4. Step 4: Simplify right side
   7,013.97x = 37,460,217.17
5. Step 5: Solve for x
   x = 37,460,217.17/7,013.97
6. Step 6: Final answer
   x = 5,340.80