Finding the Fourth Proportional to 22,817.42, 31,487.10 and 12,745.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,817.42 : 31,487.10 = 12,745.82 : x
2. Step 2: Convert to fraction form
   22,817.42/31,487.10 = 12,745.82/x
3. Step 3: Cross multiply
   22,817.42x = 31,487.10 × 12,745.82
4. Step 4: Simplify right side
   22,817.42x = 401,328,908.92
5. Step 5: Solve for x
   x = 401,328,908.92/22,817.42
6. Step 6: Final answer
   x = 17,588.71