Finding the Fourth Proportional to 12,196.96, 18,286.60 and 8,238.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.96 : 18,286.60 = 8,238.32 : x
2. Step 2: Convert to fraction form
   12,196.96/18,286.60 = 8,238.32/x
3. Step 3: Cross multiply
   12,196.96x = 18,286.60 × 8,238.32
4. Step 4: Simplify right side
   12,196.96x = 150,650,862.51
5. Step 5: Solve for x
   x = 150,650,862.51/12,196.96
6. Step 6: Final answer
   x = 12,351.51