Finding the Fourth Proportional to 13,683.25, 20,425.92 and 12,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,683.25 : 20,425.92 = 12,022.50 : x
2. Step 2: Convert to fraction form
   13,683.25/20,425.92 = 12,022.50/x
3. Step 3: Cross multiply
   13,683.25x = 20,425.92 × 12,022.50
4. Step 4: Simplify right side
   13,683.25x = 245,570,664.89
5. Step 5: Solve for x
   x = 245,570,664.89/13,683.25
6. Step 6: Final answer
   x = 17,946.80