Finding the Fourth Proportional to 11,016.12, 16,520.67 and 3,618.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,016.12 : 16,520.67 = 3,618.86 : x
2. Step 2: Convert to fraction form
   11,016.12/16,520.67 = 3,618.86/x
3. Step 3: Cross multiply
   11,016.12x = 16,520.67 × 3,618.86
4. Step 4: Simplify right side
   11,016.12x = 59,785,909.23
5. Step 5: Solve for x
   x = 59,785,909.23/11,016.12
6. Step 6: Final answer
   x = 5,427.13