Finding the Fourth Proportional to 21,914.67, 30,241.98 and 12,483.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,914.67 : 30,241.98 = 12,483.21 : x
2. Step 2: Convert to fraction form
   21,914.67/30,241.98 = 12,483.21/x
3. Step 3: Cross multiply
   21,914.67x = 30,241.98 × 12,483.21
4. Step 4: Simplify right side
   21,914.67x = 377,516,987.16
5. Step 5: Solve for x
   x = 377,516,987.16/21,914.67
6. Step 6: Final answer
   x = 17,226.68