Finding the Fourth Proportional to 21,914.70, 30,242.61 and 12,483.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,914.70 : 30,242.61 = 12,483.06 : x
2. Step 2: Convert to fraction form
   21,914.70/30,242.61 = 12,483.06/x
3. Step 3: Cross multiply
   21,914.70x = 30,242.61 × 12,483.06
4. Step 4: Simplify right side
   21,914.70x = 377,520,315.19
5. Step 5: Solve for x
   x = 377,520,315.19/21,914.70
6. Step 6: Final answer
   x = 17,226.81