Finding the Fourth Proportional to 12,268, 18,401.59 and 3,948.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,268 : 18,401.59 = 3,948.49 : x
2. Step 2: Convert to fraction form
   12,268/18,401.59 = 3,948.49/x
3. Step 3: Cross multiply
   12,268x = 18,401.59 × 3,948.49
4. Step 4: Simplify right side
   12,268x = 72,658,494.10
5. Step 5: Solve for x
   x = 72,658,494.10/12,268
6. Step 6: Final answer
   x = 5,922.60