Finding the Fourth Proportional to 21,881.42, 30,196.55 and 12,450.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,881.42 : 30,196.55 = 12,450.59 : x
2. Step 2: Convert to fraction form
   21,881.42/30,196.55 = 12,450.59/x
3. Step 3: Cross multiply
   21,881.42x = 30,196.55 × 12,450.59
4. Step 4: Simplify right side
   21,881.42x = 375,964,876.70
5. Step 5: Solve for x
   x = 375,964,876.70/21,881.42
6. Step 6: Final answer
   x = 17,181.92