Finding the Fourth Proportional to 6,856.32, 10,270.78 and 3,153.47

Step by Step Solution

1. Step 1: Write the proportion equation
   6,856.32 : 10,270.78 = 3,153.47 : x
2. Step 2: Convert to fraction form
   6,856.32/10,270.78 = 3,153.47/x
3. Step 3: Cross multiply
   6,856.32x = 10,270.78 × 3,153.47
4. Step 4: Simplify right side
   6,856.32x = 32,388,614.40
5. Step 5: Solve for x
   x = 32,388,614.40/6,856.32
6. Step 6: Final answer
   x = 4,723.91