Finding the Fourth Proportional to 12,196.15, 16,766.08 and 10,488.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.15 : 16,766.08 = 10,488.40 : x
2. Step 2: Convert to fraction form
   12,196.15/16,766.08 = 10,488.40/x
3. Step 3: Cross multiply
   12,196.15x = 16,766.08 × 10,488.40
4. Step 4: Simplify right side
   12,196.15x = 175,849,375.72
5. Step 5: Solve for x
   x = 175,849,375.72/12,196.15
6. Step 6: Final answer
   x = 14,418.43