Finding the Fourth Proportional to 22,941.50, 31,668.98 and 13,992.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,941.50 : 31,668.98 = 13,992.21 : x
2. Step 2: Convert to fraction form
   22,941.50/31,668.98 = 13,992.21/x
3. Step 3: Cross multiply
   22,941.50x = 31,668.98 × 13,992.21
4. Step 4: Simplify right side
   22,941.50x = 443,119,018.65
5. Step 5: Solve for x
   x = 443,119,018.65/22,941.50
6. Step 6: Final answer
   x = 19,315.17