Finding the Fourth Proportional to 11,243.10, 16,861.42 and 3,345.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,243.10 : 16,861.42 = 3,345.30 : x
2. Step 2: Convert to fraction form
   11,243.10/16,861.42 = 3,345.30/x
3. Step 3: Cross multiply
   11,243.10x = 16,861.42 × 3,345.30
4. Step 4: Simplify right side
   11,243.10x = 56,406,508.33
5. Step 5: Solve for x
   x = 56,406,508.33/11,243.10
6. Step 6: Final answer
   x = 5,016.99