Finding the Fourth Proportional to 12,196.73, 18,298.53 and 3,431.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.73 : 18,298.53 = 3,431.72 : x
2. Step 2: Convert to fraction form
   12,196.73/18,298.53 = 3,431.72/x
3. Step 3: Cross multiply
   12,196.73x = 18,298.53 × 3,431.72
4. Step 4: Simplify right side
   12,196.73x = 62,795,339.88
5. Step 5: Solve for x
   x = 62,795,339.88/12,196.73
6. Step 6: Final answer
   x = 5,148.54