Finding the Fourth Proportional to 12,196.59, 18,295.97 and 3,431.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.59 : 18,295.97 = 3,431.58 : x
2. Step 2: Convert to fraction form
   12,196.59/18,295.97 = 3,431.58/x
3. Step 3: Cross multiply
   12,196.59x = 18,295.97 × 3,431.58
4. Step 4: Simplify right side
   12,196.59x = 62,784,067.57
5. Step 5: Solve for x
   x = 62,784,067.57/12,196.59
6. Step 6: Final answer
   x = 5,147.67