Finding the Fourth Proportional to 21,443.83, 32,171.51 and 8,959.70

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.83 : 32,171.51 = 8,959.70 : x
2. Step 2: Convert to fraction form
   21,443.83/32,171.51 = 8,959.70/x
3. Step 3: Cross multiply
   21,443.83x = 32,171.51 × 8,959.70
4. Step 4: Simplify right side
   21,443.83x = 288,247,033.35
5. Step 5: Solve for x
   x = 288,247,033.35/21,443.83
6. Step 6: Final answer
   x = 13,441.96