Finding the Fourth Proportional to 17,105.75, 23,615.73 and 13,040.67

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105.75 : 23,615.73 = 13,040.67 : x
2. Step 2: Convert to fraction form
   17,105.75/23,615.73 = 13,040.67/x
3. Step 3: Cross multiply
   17,105.75x = 23,615.73 × 13,040.67
4. Step 4: Simplify right side
   17,105.75x = 307,964,941.74
5. Step 5: Solve for x
   x = 307,964,941.74/17,105.75
6. Step 6: Final answer
   x = 18,003.60