Finding the Fourth Proportional to 22,636.42, 31,237.67 and 12,564.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,636.42 : 31,237.67 = 12,564.56 : x
2. Step 2: Convert to fraction form
   22,636.42/31,237.67 = 12,564.56/x
3. Step 3: Cross multiply
   22,636.42x = 31,237.67 × 12,564.56
4. Step 4: Simplify right side
   22,636.42x = 392,487,688.48
5. Step 5: Solve for x
   x = 392,487,688.48/22,636.42
6. Step 6: Final answer
   x = 17,338.77