Finding the Fourth Proportional to 16,865.28, 23,274.72 and 9,414.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,865.28 : 23,274.72 = 9,414.72 : x
2. Step 2: Convert to fraction form
   16,865.28/23,274.72 = 9,414.72/x
3. Step 3: Cross multiply
   16,865.28x = 23,274.72 × 9,414.72
4. Step 4: Simplify right side
   16,865.28x = 219,124,971.88
5. Step 5: Solve for x
   x = 219,124,971.88/16,865.28
6. Step 6: Final answer
   x = 12,992.67