Finding the Fourth Proportional to 15,979.86, 22,051.89 and 8,906.22

Step by Step Solution

1. Step 1: Write the proportion equation
   15,979.86 : 22,051.89 = 8,906.22 : x
2. Step 2: Convert to fraction form
   15,979.86/22,051.89 = 8,906.22/x
3. Step 3: Cross multiply
   15,979.86x = 22,051.89 × 8,906.22
4. Step 4: Simplify right side
   15,979.86x = 196,398,983.76
5. Step 5: Solve for x
   x = 196,398,983.76/15,979.86
6. Step 6: Final answer
   x = 12,290.41