Finding the Fourth Proportional to 22,859.98, 31,545.50 and 12,786.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,859.98 : 31,545.50 = 12,786.47 : x
2. Step 2: Convert to fraction form
   22,859.98/31,545.50 = 12,786.47/x
3. Step 3: Cross multiply
   22,859.98x = 31,545.50 × 12,786.47
4. Step 4: Simplify right side
   22,859.98x = 403,355,486.02
5. Step 5: Solve for x
   x = 403,355,486.02/22,859.98
6. Step 6: Final answer
   x = 17,644.61