Finding the Fourth Proportional to 22,564.81, 31,140.59 and 12,494.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,564.81 : 31,140.59 = 12,494.36 : x
2. Step 2: Convert to fraction form
   22,564.81/31,140.59 = 12,494.36/x
3. Step 3: Cross multiply
   22,564.81x = 31,140.59 × 12,494.36
4. Step 4: Simplify right side
   22,564.81x = 389,081,757.45
5. Step 5: Solve for x
   x = 389,081,757.45/22,564.81
6. Step 6: Final answer
   x = 17,242.86