Finding the Fourth Proportional to 12,643.38, 17,448.41 and 7,054.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,643.38 : 17,448.41 = 7,054.38 : x
2. Step 2: Convert to fraction form
   12,643.38/17,448.41 = 7,054.38/x
3. Step 3: Cross multiply
   12,643.38x = 17,448.41 × 7,054.38
4. Step 4: Simplify right side
   12,643.38x = 123,087,714.54
5. Step 5: Solve for x
   x = 123,087,714.54/12,643.38
6. Step 6: Final answer
   x = 9,735.35