Finding the Fourth Proportional to 11,411.91, 17,119.23 and 4,390.29

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.91 : 17,119.23 = 4,390.29 : x
2. Step 2: Convert to fraction form
   11,411.91/17,119.23 = 4,390.29/x
3. Step 3: Cross multiply
   11,411.91x = 17,119.23 × 4,390.29
4. Step 4: Simplify right side
   11,411.91x = 75,158,384.28
5. Step 5: Solve for x
   x = 75,158,384.28/11,411.91
6. Step 6: Final answer
   x = 6,585.96