Finding the Fourth Proportional to 16,734.64, 23,091.16 and 9,659.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,734.64 : 23,091.16 = 9,659.76 : x
2. Step 2: Convert to fraction form
   16,734.64/23,091.16 = 9,659.76/x
3. Step 3: Cross multiply
   16,734.64x = 23,091.16 × 9,659.76
4. Step 4: Simplify right side
   16,734.64x = 223,055,063.72
5. Step 5: Solve for x
   x = 223,055,063.72/16,734.64
6. Step 6: Final answer
   x = 13,328.94