Finding the Fourth Proportional to 12,196.16, 16,831.20 and 7,419.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.16 : 16,831.20 = 7,419.32 : x
2. Step 2: Convert to fraction form
   12,196.16/16,831.20 = 7,419.32/x
3. Step 3: Cross multiply
   12,196.16x = 16,831.20 × 7,419.32
4. Step 4: Simplify right side
   12,196.16x = 124,876,058.78
5. Step 5: Solve for x
   x = 124,876,058.78/12,196.16
6. Step 6: Final answer
   x = 10,238.97