Finding the Fourth Proportional to 7,013.93, 9,679.22 and 3,870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,013.93 : 9,679.22 = 3,870.12 : x
2. Step 2: Convert to fraction form
   7,013.93/9,679.22 = 3,870.12/x
3. Step 3: Cross multiply
   7,013.93x = 9,679.22 × 3,870.12
4. Step 4: Simplify right side
   7,013.93x = 37,459,742.91
5. Step 5: Solve for x
   x = 37,459,742.91/7,013.93
6. Step 6: Final answer
   x = 5,340.76