Finding the Fourth Proportional to 12,399.42, 17,111.22 and 6,734.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.42 : 17,111.22 = 6,734.16 : x
2. Step 2: Convert to fraction form
   12,399.42/17,111.22 = 6,734.16/x
3. Step 3: Cross multiply
   12,399.42x = 17,111.22 × 6,734.16
4. Step 4: Simplify right side
   12,399.42x = 115,229,693.28
5. Step 5: Solve for x
   x = 115,229,693.28/12,399.42
6. Step 6: Final answer
   x = 9,293.15