Finding the Fourth Proportional to 12,638.52, 17,443.44 and 7,603.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,638.52 : 17,443.44 = 7,603.42 : x
2. Step 2: Convert to fraction form
   12,638.52/17,443.44 = 7,603.42/x
3. Step 3: Cross multiply
   12,638.52x = 17,443.44 × 7,603.42
4. Step 4: Simplify right side
   12,638.52x = 132,629,800.56
5. Step 5: Solve for x
   x = 132,629,800.56/12,638.52
6. Step 6: Final answer
   x = 10,494.09