Finding the Fourth Proportional to 22,907.82, 31,612.78 and 12,836.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,907.82 : 31,612.78 = 12,836.34 : x
2. Step 2: Convert to fraction form
   22,907.82/31,612.78 = 12,836.34/x
3. Step 3: Cross multiply
   22,907.82x = 31,612.78 × 12,836.34
4. Step 4: Simplify right side
   22,907.82x = 405,792,328.24
5. Step 5: Solve for x
   x = 405,792,328.24/22,907.82
6. Step 6: Final answer
   x = 17,714.14