Finding the Fourth Proportional to 21,783.18, 30,062.40 and 12,224.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,783.18 : 30,062.40 = 12,224.18 : x
2. Step 2: Convert to fraction form
   21,783.18/30,062.40 = 12,224.18/x
3. Step 3: Cross multiply
   21,783.18x = 30,062.40 × 12,224.18
4. Step 4: Simplify right side
   21,783.18x = 367,488,188.83
5. Step 5: Solve for x
   x = 367,488,188.83/21,783.18
6. Step 6: Final answer
   x = 16,870.27