Finding the Fourth Proportional to 22,818.18, 31,485.98 and 12,745.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,818.18 : 31,485.98 = 12,745.34 : x
2. Step 2: Convert to fraction form
   22,818.18/31,485.98 = 12,745.34/x
3. Step 3: Cross multiply
   22,818.18x = 31,485.98 × 12,745.34
4. Step 4: Simplify right side
   22,818.18x = 401,299,520.33
5. Step 5: Solve for x
   x = 401,299,520.33/22,818.18
6. Step 6: Final answer
   x = 17,586.83