Finding the Fourth Proportional to 22,479.68, 31,019.52 and 13,046.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,479.68 : 31,019.52 = 13,046.72 : x
2. Step 2: Convert to fraction form
   22,479.68/31,019.52 = 13,046.72/x
3. Step 3: Cross multiply
   22,479.68x = 31,019.52 × 13,046.72
4. Step 4: Simplify right side
   22,479.68x = 404,702,991.97
5. Step 5: Solve for x
   x = 404,702,991.97/22,479.68
6. Step 6: Final answer
   x = 18,003.06