Finding the Fourth Proportional to 12,196.74, 18,293.46 and 3,432.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.74 : 18,293.46 = 3,432.40 : x
2. Step 2: Convert to fraction form
   12,196.74/18,293.46 = 3,432.40/x
3. Step 3: Cross multiply
   12,196.74x = 18,293.46 × 3,432.40
4. Step 4: Simplify right side
   12,196.74x = 62,790,472.10
5. Step 5: Solve for x
   x = 62,790,472.10/12,196.74
6. Step 6: Final answer
   x = 5,148.14