Finding the Fourth Proportional to 6,428.26, 9,643.46 and 3,141.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428.26 : 9,643.46 = 3,141.69 : x
2. Step 2: Convert to fraction form
   6,428.26/9,643.46 = 3,141.69/x
3. Step 3: Cross multiply
   6,428.26x = 9,643.46 × 3,141.69
4. Step 4: Simplify right side
   6,428.26x = 30,296,709.98
5. Step 5: Solve for x
   x = 30,296,709.98/6,428.26
6. Step 6: Final answer
   x = 4,713.05