Finding the Fourth Proportional to 10,811.51, 16,218.86 and 3,414.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,811.51 : 16,218.86 = 3,414.29 : x
2. Step 2: Convert to fraction form
   10,811.51/16,218.86 = 3,414.29/x
3. Step 3: Cross multiply
   10,811.51x = 16,218.86 × 3,414.29
4. Step 4: Simplify right side
   10,811.51x = 55,375,891.51
5. Step 5: Solve for x
   x = 55,375,891.51/10,811.51
6. Step 6: Final answer
   x = 5,121.94