Finding the Fourth Proportional to 12,742.29, 17,583.06 and 7,440.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742.29 : 17,583.06 = 7,440.18 : x
2. Step 2: Convert to fraction form
   12,742.29/17,583.06 = 7,440.18/x
3. Step 3: Cross multiply
   12,742.29x = 17,583.06 × 7,440.18
4. Step 4: Simplify right side
   12,742.29x = 130,821,132.30
5. Step 5: Solve for x
   x = 130,821,132.30/12,742.29
6. Step 6: Final answer
   x = 10,266.69