Finding the Fourth Proportional to 12,448.04, 18,674.83 and 5,429.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,448.04 : 18,674.83 = 5,429.19 : x
2. Step 2: Convert to fraction form
   12,448.04/18,674.83 = 5,429.19/x
3. Step 3: Cross multiply
   12,448.04x = 18,674.83 × 5,429.19
4. Step 4: Simplify right side
   12,448.04x = 101,389,200.29
5. Step 5: Solve for x
   x = 101,389,200.29/12,448.04
6. Step 6: Final answer
   x = 8,144.99