Finding the Fourth Proportional to 22,617.56, 31,212.24 and 12,681.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,617.56 : 31,212.24 = 12,681.56 : x
2. Step 2: Convert to fraction form
   22,617.56/31,212.24 = 12,681.56/x
3. Step 3: Cross multiply
   22,617.56x = 31,212.24 × 12,681.56
4. Step 4: Simplify right side
   22,617.56x = 395,819,894.29
5. Step 5: Solve for x
   x = 395,819,894.29/22,617.56
6. Step 6: Final answer
   x = 17,500.56