Finding the Fourth Proportional to 22,569.55, 31,136.33 and 13,611.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,569.55 : 31,136.33 = 13,611.96 : x
2. Step 2: Convert to fraction form
   22,569.55/31,136.33 = 13,611.96/x
3. Step 3: Cross multiply
   22,569.55x = 31,136.33 × 13,611.96
4. Step 4: Simplify right side
   22,569.55x = 423,826,512.54
5. Step 5: Solve for x
   x = 423,826,512.54/22,569.55
6. Step 6: Final answer
   x = 18,778.69