Finding the Fourth Proportional to 11,016.10, 16,520.73 and 3,618.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,016.10 : 16,520.73 = 3,618.80 : x
2. Step 2: Convert to fraction form
   11,016.10/16,520.73 = 3,618.80/x
3. Step 3: Cross multiply
   11,016.10x = 16,520.73 × 3,618.80
4. Step 4: Simplify right side
   11,016.10x = 59,785,260.50
5. Step 5: Solve for x
   x = 59,785,260.50/11,016.10
6. Step 6: Final answer
   x = 5,427.08