Finding the Fourth Proportional to 11,290.72, 16,936.56 and 3,499.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,290.72 : 16,936.56 = 3,499.36 : x
2. Step 2: Convert to fraction form
   11,290.72/16,936.56 = 3,499.36/x
3. Step 3: Cross multiply
   11,290.72x = 16,936.56 × 3,499.36
4. Step 4: Simplify right side
   11,290.72x = 59,267,120.60
5. Step 5: Solve for x
   x = 59,267,120.60/11,290.72
6. Step 6: Final answer
   x = 5,249.19