Finding the Fourth Proportional to 12,409.43, 18,629.94 and 8,045.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,409.43 : 18,629.94 = 8,045.15 : x
2. Step 2: Convert to fraction form
   12,409.43/18,629.94 = 8,045.15/x
3. Step 3: Cross multiply
   12,409.43x = 18,629.94 × 8,045.15
4. Step 4: Simplify right side
   12,409.43x = 149,880,661.79
5. Step 5: Solve for x
   x = 149,880,661.79/12,409.43
6. Step 6: Final answer
   x = 12,077.97