Finding the Fourth Proportional to 22,905.69, 31,609.83 and 12,697.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,905.69 : 31,609.83 = 12,697.37 : x
2. Step 2: Convert to fraction form
   22,905.69/31,609.83 = 12,697.37/x
3. Step 3: Cross multiply
   22,905.69x = 31,609.83 × 12,697.37
4. Step 4: Simplify right side
   22,905.69x = 401,361,821.63
5. Step 5: Solve for x
   x = 401,361,821.63/22,905.69
6. Step 6: Final answer
   x = 17,522.37