Finding the Fourth Proportional to 11,015.40, 16,519.61 and 3,618.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,015.40 : 16,519.61 = 3,618.14 : x
2. Step 2: Convert to fraction form
   11,015.40/16,519.61 = 3,618.14/x
3. Step 3: Cross multiply
   11,015.40x = 16,519.61 × 3,618.14
4. Step 4: Simplify right side
   11,015.40x = 59,770,261.73
5. Step 5: Solve for x
   x = 59,770,261.73/11,015.40
6. Step 6: Final answer
   x = 5,426.06