Finding the Fourth Proportional to 16,676.24, 23,012.28 and 9,121.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,676.24 : 23,012.28 = 9,121.12 : x
2. Step 2: Convert to fraction form
   16,676.24/23,012.28 = 9,121.12/x
3. Step 3: Cross multiply
   16,676.24x = 23,012.28 × 9,121.12
4. Step 4: Simplify right side
   16,676.24x = 209,897,767.35
5. Step 5: Solve for x
   x = 209,897,767.35/16,676.24
6. Step 6: Final answer
   x = 12,586.64