Finding the Fourth Proportional to 22,736.94, 31,376.50 and 12,665.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,736.94 : 31,376.50 = 12,665.36 : x
2. Step 2: Convert to fraction form
   22,736.94/31,376.50 = 12,665.36/x
3. Step 3: Cross multiply
   22,736.94x = 31,376.50 × 12,665.36
4. Step 4: Simplify right side
   22,736.94x = 397,394,714.82
5. Step 5: Solve for x
   x = 397,394,714.82/22,736.94
6. Step 6: Final answer
   x = 17,477.94