Finding the Fourth Proportional to 11,405.88, 17,119.58 and 5,863.11

Step by Step Solution

1. Step 1: Write the proportion equation
   11,405.88 : 17,119.58 = 5,863.11 : x
2. Step 2: Convert to fraction form
   11,405.88/17,119.58 = 5,863.11/x
3. Step 3: Cross multiply
   11,405.88x = 17,119.58 × 5,863.11
4. Step 4: Simplify right side
   11,405.88x = 100,373,980.69
5. Step 5: Solve for x
   x = 100,373,980.69/11,405.88
6. Step 6: Final answer
   x = 8,800.20