Finding the Fourth Proportional to 22,748.38, 31,388.61 and 12,676.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,748.38 : 31,388.61 = 12,676.57 : x
2. Step 2: Convert to fraction form
   22,748.38/31,388.61 = 12,676.57/x
3. Step 3: Cross multiply
   22,748.38x = 31,388.61 × 12,676.57
4. Step 4: Simplify right side
   22,748.38x = 397,899,911.87
5. Step 5: Solve for x
   x = 397,899,911.87/22,748.38
6. Step 6: Final answer
   x = 17,491.35