Finding the Fourth Proportional to 22,940.82, 31,657.83 and 12,869.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,940.82 : 31,657.83 = 12,869.04 : x
2. Step 2: Convert to fraction form
   22,940.82/31,657.83 = 12,869.04/x
3. Step 3: Cross multiply
   22,940.82x = 31,657.83 × 12,869.04
4. Step 4: Simplify right side
   22,940.82x = 407,405,880.58
5. Step 5: Solve for x
   x = 407,405,880.58/22,940.82
6. Step 6: Final answer
   x = 17,758.99