Finding the Fourth Proportional to 22,511.70, 31,067.22 and 13,561.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,511.70 : 31,067.22 = 13,561.98 : x
2. Step 2: Convert to fraction form
   22,511.70/31,067.22 = 13,561.98/x
3. Step 3: Cross multiply
   22,511.70x = 31,067.22 × 13,561.98
4. Step 4: Simplify right side
   22,511.70x = 421,333,016.30
5. Step 5: Solve for x
   x = 421,333,016.30/22,511.70
6. Step 6: Final answer
   x = 18,716.18