Finding the Fourth Proportional to 22,813.10, 31,481.76 and 12,741.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,813.10 : 31,481.76 = 12,741.72 : x
2. Step 2: Convert to fraction form
   22,813.10/31,481.76 = 12,741.72/x
3. Step 3: Cross multiply
   22,813.10x = 31,481.76 × 12,741.72
4. Step 4: Simplify right side
   22,813.10x = 401,131,771.03
5. Step 5: Solve for x
   x = 401,131,771.03/22,813.10
6. Step 6: Final answer
   x = 17,583.40