Finding the Fourth Proportional to 8,019.20, 12,026.68 and 3,086.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,019.20 : 12,026.68 = 3,086.10 : x
2. Step 2: Convert to fraction form
   8,019.20/12,026.68 = 3,086.10/x
3. Step 3: Cross multiply
   8,019.20x = 12,026.68 × 3,086.10
4. Step 4: Simplify right side
   8,019.20x = 37,115,529.43
5. Step 5: Solve for x
   x = 37,115,529.43/8,019.20
6. Step 6: Final answer
   x = 4,628.33