Finding the Fourth Proportional to 22,495.30, 31,043.40 and 12,423.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,495.30 : 31,043.40 = 12,423.69 : x
2. Step 2: Convert to fraction form
   22,495.30/31,043.40 = 12,423.69/x
3. Step 3: Cross multiply
   22,495.30x = 31,043.40 × 12,423.69
4. Step 4: Simplify right side
   22,495.30x = 385,673,578.15
5. Step 5: Solve for x
   x = 385,673,578.15/22,495.30
6. Step 6: Final answer
   x = 17,144.63