Finding the Fourth Proportional to 12,744.49, 17,587.52 and 7,438.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,744.49 : 17,587.52 = 7,438.28 : x
2. Step 2: Convert to fraction form
   12,744.49/17,587.52 = 7,438.28/x
3. Step 3: Cross multiply
   12,744.49x = 17,587.52 × 7,438.28
4. Step 4: Simplify right side
   12,744.49x = 130,820,861.07
5. Step 5: Solve for x
   x = 130,820,861.07/12,744.49
6. Step 6: Final answer
   x = 10,264.89