Finding the Fourth Proportional to 12,196.97, 18,296.53 and 3,431.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.97 : 18,296.53 = 3,431.96 : x
2. Step 2: Convert to fraction form
   12,196.97/18,296.53 = 3,431.96/x
3. Step 3: Cross multiply
   12,196.97x = 18,296.53 × 3,431.96
4. Step 4: Simplify right side
   12,196.97x = 62,792,859.04
5. Step 5: Solve for x
   x = 62,792,859.04/12,196.97
6. Step 6: Final answer
   x = 5,148.24