Finding the Fourth Proportional to 6,426.82, 9,640.21 and 1,809.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.82 : 9,640.21 = 1,809.82 : x
2. Step 2: Convert to fraction form
   6,426.82/9,640.21 = 1,809.82/x
3. Step 3: Cross multiply
   6,426.82x = 9,640.21 × 1,809.82
4. Step 4: Simplify right side
   6,426.82x = 17,447,044.86
5. Step 5: Solve for x
   x = 17,447,044.86/6,426.82
6. Step 6: Final answer
   x = 2,714.72