Finding the Fourth Proportional to 11,391.28, 17,089.42 and 3,494.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,391.28 : 17,089.42 = 3,494.88 : x
2. Step 2: Convert to fraction form
   11,391.28/17,089.42 = 3,494.88/x
3. Step 3: Cross multiply
   11,391.28x = 17,089.42 × 3,494.88
4. Step 4: Simplify right side
   11,391.28x = 59,725,472.17
5. Step 5: Solve for x
   x = 59,725,472.17/11,391.28
6. Step 6: Final answer
   x = 5,243.09