Finding the Fourth Proportional to 12,436.54, 18,659.06 and 5,863.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.54 : 18,659.06 = 5,863.19 : x
2. Step 2: Convert to fraction form
   12,436.54/18,659.06 = 5,863.19/x
3. Step 3: Cross multiply
   12,436.54x = 18,659.06 × 5,863.19
4. Step 4: Simplify right side
   12,436.54x = 109,401,513.38
5. Step 5: Solve for x
   x = 109,401,513.38/12,436.54
6. Step 6: Final answer
   x = 8,796.78