Finding the Fourth Proportional to 21,443.62, 32,164.40 and 5,861.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.62 : 32,164.40 = 5,861.28 : x
2. Step 2: Convert to fraction form
   21,443.62/32,164.40 = 5,861.28/x
3. Step 3: Cross multiply
   21,443.62x = 32,164.40 × 5,861.28
4. Step 4: Simplify right side
   21,443.62x = 188,524,554.43
5. Step 5: Solve for x
   x = 188,524,554.43/21,443.62
6. Step 6: Final answer
   x = 8,791.64