Finding the Fourth Proportional to 22,668.31, 31,279.87 and 13,106.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,668.31 : 31,279.87 = 13,106.67 : x
2. Step 2: Convert to fraction form
   22,668.31/31,279.87 = 13,106.67/x
3. Step 3: Cross multiply
   22,668.31x = 31,279.87 × 13,106.67
4. Step 4: Simplify right side
   22,668.31x = 409,974,933.73
5. Step 5: Solve for x
   x = 409,974,933.73/22,668.31
6. Step 6: Final answer
   x = 18,085.82