Finding the Fourth Proportional to 11,728.16, 17,589.16 and 3,405.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,728.16 : 17,589.16 = 3,405.94 : x
2. Step 2: Convert to fraction form
   11,728.16/17,589.16 = 3,405.94/x
3. Step 3: Cross multiply
   11,728.16x = 17,589.16 × 3,405.94
4. Step 4: Simplify right side
   11,728.16x = 59,907,623.61
5. Step 5: Solve for x
   x = 59,907,623.61/11,728.16
6. Step 6: Final answer
   x = 5,108.02