Finding the Fourth Proportional to 10,850.18, 16,275.83 and 3,455.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,850.18 : 16,275.83 = 3,455.21 : x
2. Step 2: Convert to fraction form
   10,850.18/16,275.83 = 3,455.21/x
3. Step 3: Cross multiply
   10,850.18x = 16,275.83 × 3,455.21
4. Step 4: Simplify right side
   10,850.18x = 56,236,311.92
5. Step 5: Solve for x
   x = 56,236,311.92/10,850.18
6. Step 6: Final answer
   x = 5,182.99