Finding the Fourth Proportional to 21,874.34, 30,185.34 and 12,442.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,874.34 : 30,185.34 = 12,442.26 : x
2. Step 2: Convert to fraction form
   21,874.34/30,185.34 = 12,442.26/x
3. Step 3: Cross multiply
   21,874.34x = 30,185.34 × 12,442.26
4. Step 4: Simplify right side
   21,874.34x = 375,573,848.47
5. Step 5: Solve for x
   x = 375,573,848.47/21,874.34
6. Step 6: Final answer
   x = 17,169.61