Finding the Fourth Proportional to 22,627.42, 31,222.80 and 12,555.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,627.42 : 31,222.80 = 12,555.34 : x
2. Step 2: Convert to fraction form
   22,627.42/31,222.80 = 12,555.34/x
3. Step 3: Cross multiply
   22,627.42x = 31,222.80 × 12,555.34
4. Step 4: Simplify right side
   22,627.42x = 392,012,869.75
5. Step 5: Solve for x
   x = 392,012,869.75/22,627.42
6. Step 6: Final answer
   x = 17,324.68