Finding the Fourth Proportional to 17,288.39, 23,859.11 and 13,031.94

Step by Step Solution

1. Step 1: Write the proportion equation
   17,288.39 : 23,859.11 = 13,031.94 : x
2. Step 2: Convert to fraction form
   17,288.39/23,859.11 = 13,031.94/x
3. Step 3: Cross multiply
   17,288.39x = 23,859.11 × 13,031.94
4. Step 4: Simplify right side
   17,288.39x = 310,930,404.51
5. Step 5: Solve for x
   x = 310,930,404.51/17,288.39
6. Step 6: Final answer
   x = 17,984.93