Finding the Fourth Proportional to 12,723.72, 17,567.49 and 9,734.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.72 : 17,567.49 = 9,734.34 : x
2. Step 2: Convert to fraction form
   12,723.72/17,567.49 = 9,734.34/x
3. Step 3: Cross multiply
   12,723.72x = 17,567.49 × 9,734.34
4. Step 4: Simplify right side
   12,723.72x = 171,007,920.61
5. Step 5: Solve for x
   x = 171,007,920.61/12,723.72
6. Step 6: Final answer
   x = 13,440.09