Finding the Fourth Proportional to 12,457.96, 18,648.78 and 8,066.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.96 : 18,648.78 = 8,066.68 : x
2. Step 2: Convert to fraction form
   12,457.96/18,648.78 = 8,066.68/x
3. Step 3: Cross multiply
   12,457.96x = 18,648.78 × 8,066.68
4. Step 4: Simplify right side
   12,457.96x = 150,433,740.65
5. Step 5: Solve for x
   x = 150,433,740.65/12,457.96
6. Step 6: Final answer
   x = 12,075.31