Finding the Fourth Proportional to 12,188.53, 16,819 and 9,676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,188.53 : 16,819 = 9,676.72 : x
2. Step 2: Convert to fraction form
   12,188.53/16,819 = 9,676.72/x
3. Step 3: Cross multiply
   12,188.53x = 16,819 × 9,676.72
4. Step 4: Simplify right side
   12,188.53x = 162,752,753.68
5. Step 5: Solve for x
   x = 162,752,753.68/12,188.53
6. Step 6: Final answer
   x = 13,352.94