Finding the Fourth Proportional to 6,443.36, 9,664.24 and 1,826.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.36 : 9,664.24 = 1,826.72 : x
2. Step 2: Convert to fraction form
   6,443.36/9,664.24 = 1,826.72/x
3. Step 3: Cross multiply
   6,443.36x = 9,664.24 × 1,826.72
4. Step 4: Simplify right side
   6,443.36x = 17,653,860.49
5. Step 5: Solve for x
   x = 17,653,860.49/6,443.36
6. Step 6: Final answer
   x = 2,739.85