Finding the Fourth Proportional to 22,910.86, 31,617.37 and 12,841.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,910.86 : 31,617.37 = 12,841.55 : x
2. Step 2: Convert to fraction form
   22,910.86/31,617.37 = 12,841.55/x
3. Step 3: Cross multiply
   22,910.86x = 31,617.37 × 12,841.55
4. Step 4: Simplify right side
   22,910.86x = 406,016,014.25
5. Step 5: Solve for x
   x = 406,016,014.25/22,910.86
6. Step 6: Final answer
   x = 17,721.55