Finding the Fourth Proportional to 17,105.94, 23,616.02 and 13,040.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105.94 : 23,616.02 = 13,040.86 : x
2. Step 2: Convert to fraction form
   17,105.94/23,616.02 = 13,040.86/x
3. Step 3: Cross multiply
   17,105.94x = 23,616.02 × 13,040.86
4. Step 4: Simplify right side
   17,105.94x = 307,973,210.58
5. Step 5: Solve for x
   x = 307,973,210.58/17,105.94
6. Step 6: Final answer
   x = 18,003.88