Finding the Fourth Proportional to 12,196.71, 16,831.49 and 6,607.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.71 : 16,831.49 = 6,607.71 : x
2. Step 2: Convert to fraction form
   12,196.71/16,831.49 = 6,607.71/x
3. Step 3: Cross multiply
   12,196.71x = 16,831.49 × 6,607.71
4. Step 4: Simplify right side
   12,196.71x = 111,217,571.75
5. Step 5: Solve for x
   x = 111,217,571.75/12,196.71
6. Step 6: Final answer
   x = 9,118.65