Finding the Fourth Proportional to 12,749.22, 17,584.56 and 7,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,749.22 : 17,584.56 = 7,443.72 : x
2. Step 2: Convert to fraction form
   12,749.22/17,584.56 = 7,443.72/x
3. Step 3: Cross multiply
   12,749.22x = 17,584.56 × 7,443.72
4. Step 4: Simplify right side
   12,749.22x = 130,894,540.96
5. Step 5: Solve for x
   x = 130,894,540.96/12,749.22
6. Step 6: Final answer
   x = 10,266.87