Finding the Fourth Proportional to 21,881.17, 30,196.71 and 12,450.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,881.17 : 30,196.71 = 12,450.34 : x
2. Step 2: Convert to fraction form
   21,881.17/30,196.71 = 12,450.34/x
3. Step 3: Cross multiply
   21,881.17x = 30,196.71 × 12,450.34
4. Step 4: Simplify right side
   21,881.17x = 375,959,306.38
5. Step 5: Solve for x
   x = 375,959,306.38/21,881.17
6. Step 6: Final answer
   x = 17,181.86