Finding the Fourth Proportional to 22,817.70, 31,488.18 and 12,747.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,817.70 : 31,488.18 = 12,747.15 : x
2. Step 2: Convert to fraction form
   22,817.70/31,488.18 = 12,747.15/x
3. Step 3: Cross multiply
   22,817.70x = 31,488.18 × 12,747.15
4. Step 4: Simplify right side
   22,817.70x = 401,384,553.69
5. Step 5: Solve for x
   x = 401,384,553.69/22,817.70
6. Step 6: Final answer
   x = 17,590.93