Finding the Fourth Proportional to 22,159.32, 30,578.66 and 12,727.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,159.32 : 30,578.66 = 12,727.89 : x
2. Step 2: Convert to fraction form
   22,159.32/30,578.66 = 12,727.89/x
3. Step 3: Cross multiply
   22,159.32x = 30,578.66 × 12,727.89
4. Step 4: Simplify right side
   22,159.32x = 389,201,820.83
5. Step 5: Solve for x
   x = 389,201,820.83/22,159.32
6. Step 6: Final answer
   x = 17,563.80