Finding the Fourth Proportional to 11,728.22, 17,595.29 and 3,408.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,728.22 : 17,595.29 = 3,408.05 : x
2. Step 2: Convert to fraction form
   11,728.22/17,595.29 = 3,408.05/x
3. Step 3: Cross multiply
   11,728.22x = 17,595.29 × 3,408.05
4. Step 4: Simplify right side
   11,728.22x = 59,965,680.59
5. Step 5: Solve for x
   x = 59,965,680.59/11,728.22
6. Step 6: Final answer
   x = 5,112.94