Finding the Fourth Proportional to 22,748.40, 31,391.98 and 12,676.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,748.40 : 31,391.98 = 12,676.32 : x
2. Step 2: Convert to fraction form
   22,748.40/31,391.98 = 12,676.32/x
3. Step 3: Cross multiply
   22,748.40x = 31,391.98 × 12,676.32
4. Step 4: Simplify right side
   22,748.40x = 397,934,783.91
5. Step 5: Solve for x
   x = 397,934,783.91/22,748.40
6. Step 6: Final answer
   x = 17,492.87