Finding the Fourth Proportional to 22,563.95, 31,139.41 and 12,493.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,563.95 : 31,139.41 = 12,493.50 : x
2. Step 2: Convert to fraction form
   22,563.95/31,139.41 = 12,493.50/x
3. Step 3: Cross multiply
   22,563.95x = 31,139.41 × 12,493.50
4. Step 4: Simplify right side
   22,563.95x = 389,040,269.28
5. Step 5: Solve for x
   x = 389,040,269.28/22,563.95
6. Step 6: Final answer
   x = 17,241.67