Finding the Fourth Proportional to 11,629.27, 17,429.61 and 5,380.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,629.27 : 17,429.61 = 5,380.81 : x
2. Step 2: Convert to fraction form
   11,629.27/17,429.61 = 5,380.81/x
3. Step 3: Cross multiply
   11,629.27x = 17,429.61 × 5,380.81
4. Step 4: Simplify right side
   11,629.27x = 93,785,419.78
5. Step 5: Solve for x
   x = 93,785,419.78/11,629.27
6. Step 6: Final answer
   x = 8,064.60