Finding the Fourth Proportional to 10,856.72, 16,284.87 and 4,282.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,856.72 : 16,284.87 = 4,282.96 : x
2. Step 2: Convert to fraction form
   10,856.72/16,284.87 = 4,282.96/x
3. Step 3: Cross multiply
   10,856.72x = 16,284.87 × 4,282.96
4. Step 4: Simplify right side
   10,856.72x = 69,747,446.82
5. Step 5: Solve for x
   x = 69,747,446.82/10,856.72
6. Step 6: Final answer
   x = 6,424.36