Finding the Fourth Proportional to 22,986, 31,720.71 and 13,050

Step by Step Solution

1. Step 1: Write the proportion equation
   22,986 : 31,720.71 = 13,050 : x
2. Step 2: Convert to fraction form
   22,986/31,720.71 = 13,050/x
3. Step 3: Cross multiply
   22,986x = 31,720.71 × 13,050
4. Step 4: Simplify right side
   22,986x = 413,955,265.50
5. Step 5: Solve for x
   x = 413,955,265.50/22,986
6. Step 6: Final answer
   x = 18,009.02