Finding the Fourth Proportional to 12,944.10, 17,863.37 and 7,638.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,944.10 : 17,863.37 = 7,638.92 : x
2. Step 2: Convert to fraction form
   12,944.10/17,863.37 = 7,638.92/x
3. Step 3: Cross multiply
   12,944.10x = 17,863.37 × 7,638.92
4. Step 4: Simplify right side
   12,944.10x = 136,456,726.85
5. Step 5: Solve for x
   x = 136,456,726.85/12,944.10
6. Step 6: Final answer
   x = 10,542.00