Finding the Fourth Proportional to 12,446.50, 18,669.27 and 3,086.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.50 : 18,669.27 = 3,086.54 : x
2. Step 2: Convert to fraction form
   12,446.50/18,669.27 = 3,086.54/x
3. Step 3: Cross multiply
   12,446.50x = 18,669.27 × 3,086.54
4. Step 4: Simplify right side
   12,446.50x = 57,623,448.63
5. Step 5: Solve for x
   x = 57,623,448.63/12,446.50
6. Step 6: Final answer
   x = 4,629.69