Finding the Fourth Proportional to 22,474.72, 31,015.20 and 13,045.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,474.72 : 31,015.20 = 13,045.12 : x
2. Step 2: Convert to fraction form
   22,474.72/31,015.20 = 13,045.12/x
3. Step 3: Cross multiply
   22,474.72x = 31,015.20 × 13,045.12
4. Step 4: Simplify right side
   22,474.72x = 404,597,005.82
5. Step 5: Solve for x
   x = 404,597,005.82/22,474.72
6. Step 6: Final answer
   x = 18,002.32