Finding the Fourth Proportional to 16,940.81, 25,419.89 and 8,066.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,940.81 : 25,419.89 = 8,066.18 : x
2. Step 2: Convert to fraction form
   16,940.81/25,419.89 = 8,066.18/x
3. Step 3: Cross multiply
   16,940.81x = 25,419.89 × 8,066.18
4. Step 4: Simplify right side
   16,940.81x = 205,041,408.32
5. Step 5: Solve for x
   x = 205,041,408.32/16,940.81
6. Step 6: Final answer
   x = 12,103.40