Finding the Fourth Proportional to 8,012.21, 12,016.89 and 2,168.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,012.21 : 12,016.89 = 2,168.06 : x
2. Step 2: Convert to fraction form
   8,012.21/12,016.89 = 2,168.06/x
3. Step 3: Cross multiply
   8,012.21x = 12,016.89 × 2,168.06
4. Step 4: Simplify right side
   8,012.21x = 26,053,278.45
5. Step 5: Solve for x
   x = 26,053,278.45/8,012.21
6. Step 6: Final answer
   x = 3,251.70