Finding the Fourth Proportional to 22,541.22, 31,109.21 and 12,981.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.22 : 31,109.21 = 12,981.42 : x
2. Step 2: Convert to fraction form
   22,541.22/31,109.21 = 12,981.42/x
3. Step 3: Cross multiply
   22,541.22x = 31,109.21 × 12,981.42
4. Step 4: Simplify right side
   22,541.22x = 403,841,704.65
5. Step 5: Solve for x
   x = 403,841,704.65/22,541.22
6. Step 6: Final answer
   x = 17,915.70