Finding the Fourth Proportional to 12,196.89, 16,827.18 and 7,161.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.89 : 16,827.18 = 7,161.33 : x
2. Step 2: Convert to fraction form
   12,196.89/16,827.18 = 7,161.33/x
3. Step 3: Cross multiply
   12,196.89x = 16,827.18 × 7,161.33
4. Step 4: Simplify right side
   12,196.89x = 120,504,988.95
5. Step 5: Solve for x
   x = 120,504,988.95/12,196.89
6. Step 6: Final answer
   x = 9,879.98