Finding the Fourth Proportional to 21,892.56, 30,212.10 and 12,462

Step by Step Solution

1. Step 1: Write the proportion equation
   21,892.56 : 30,212.10 = 12,462 : x
2. Step 2: Convert to fraction form
   21,892.56/30,212.10 = 12,462/x
3. Step 3: Cross multiply
   21,892.56x = 30,212.10 × 12,462
4. Step 4: Simplify right side
   21,892.56x = 376,503,190.20
5. Step 5: Solve for x
   x = 376,503,190.20/21,892.56
6. Step 6: Final answer
   x = 17,197.77