Finding the Fourth Proportional to 11,391.35, 17,089.49 and 3,493.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,391.35 : 17,089.49 = 3,493.89 : x
2. Step 2: Convert to fraction form
   11,391.35/17,089.49 = 3,493.89/x
3. Step 3: Cross multiply
   11,391.35x = 17,089.49 × 3,493.89
4. Step 4: Simplify right side
   11,391.35x = 59,708,806.95
5. Step 5: Solve for x
   x = 59,708,806.95/11,391.35
6. Step 6: Final answer
   x = 5,241.59