Finding the Fourth Proportional to 12,447.94, 18,674.47 and 8,554.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,447.94 : 18,674.47 = 8,554.18 : x
2. Step 2: Convert to fraction form
   12,447.94/18,674.47 = 8,554.18/x
3. Step 3: Cross multiply
   12,447.94x = 18,674.47 × 8,554.18
4. Step 4: Simplify right side
   12,447.94x = 159,744,777.78
5. Step 5: Solve for x
   x = 159,744,777.78/12,447.94
6. Step 6: Final answer
   x = 12,833.03