Finding the Fourth Proportional to 7,015.06, 9,679.89 and 3,871.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,015.06 : 9,679.89 = 3,871.05 : x
2. Step 2: Convert to fraction form
   7,015.06/9,679.89 = 3,871.05/x
3. Step 3: Cross multiply
   7,015.06x = 9,679.89 × 3,871.05
4. Step 4: Simplify right side
   7,015.06x = 37,471,338.18
5. Step 5: Solve for x
   x = 37,471,338.18/7,015.06
6. Step 6: Final answer
   x = 5,341.56