Finding the Fourth Proportional to 6,426.82, 9,643.57 and 2,919.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.82 : 9,643.57 = 2,919.32 : x
2. Step 2: Convert to fraction form
   6,426.82/9,643.57 = 2,919.32/x
3. Step 3: Cross multiply
   6,426.82x = 9,643.57 × 2,919.32
4. Step 4: Simplify right side
   6,426.82x = 28,152,611.26
5. Step 5: Solve for x
   x = 28,152,611.26/6,426.82
6. Step 6: Final answer
   x = 4,380.49