Finding the Fourth Proportional to 12,080.40, 18,096.99 and 8,323.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,080.40 : 18,096.99 = 8,323.31 : x
2. Step 2: Convert to fraction form
   12,080.40/18,096.99 = 8,323.31/x
3. Step 3: Cross multiply
   12,080.40x = 18,096.99 × 8,323.31
4. Step 4: Simplify right side
   12,080.40x = 150,626,857.84
5. Step 5: Solve for x
   x = 150,626,857.84/12,080.40
6. Step 6: Final answer
   x = 12,468.70