Finding the Fourth Proportional to 12,843.57, 19,269.47 and 5,454.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843.57 : 19,269.47 = 5,454.24 : x
2. Step 2: Convert to fraction form
   12,843.57/19,269.47 = 5,454.24/x
3. Step 3: Cross multiply
   12,843.57x = 19,269.47 × 5,454.24
4. Step 4: Simplify right side
   12,843.57x = 105,100,314.05
5. Step 5: Solve for x
   x = 105,100,314.05/12,843.57
6. Step 6: Final answer
   x = 8,183.11