Finding the Fourth Proportional to 22,564.98, 31,139.92 and 12,493.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,564.98 : 31,139.92 = 12,493.60 : x
2. Step 2: Convert to fraction form
   22,564.98/31,139.92 = 12,493.60/x
3. Step 3: Cross multiply
   22,564.98x = 31,139.92 × 12,493.60
4. Step 4: Simplify right side
   22,564.98x = 389,049,629.04
5. Step 5: Solve for x
   x = 389,049,629.04/22,564.98
6. Step 6: Final answer
   x = 17,241.30