Finding the Fourth Proportional to 12,196.42, 18,296.12 and 3,431.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.42 : 18,296.12 = 3,431.34 : x
2. Step 2: Convert to fraction form
   12,196.42/18,296.12 = 3,431.34/x
3. Step 3: Cross multiply
   12,196.42x = 18,296.12 × 3,431.34
4. Step 4: Simplify right side
   12,196.42x = 62,780,216.98
5. Step 5: Solve for x
   x = 62,780,216.98/12,196.42
6. Step 6: Final answer
   x = 5,147.43