Finding the Fourth Proportional to 23,114.96, 31,890.72 and 13,042.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,114.96 : 31,890.72 = 13,042.16 : x
2. Step 2: Convert to fraction form
   23,114.96/31,890.72 = 13,042.16/x
3. Step 3: Cross multiply
   23,114.96x = 31,890.72 × 13,042.16
4. Step 4: Simplify right side
   23,114.96x = 415,923,872.76
5. Step 5: Solve for x
   x = 415,923,872.76/23,114.96
6. Step 6: Final answer
   x = 17,993.71