Finding the Fourth Proportional to 16,287.89, 24,429.30 and 6,291.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,287.89 : 24,429.30 = 6,291.20 : x
2. Step 2: Convert to fraction form
   16,287.89/24,429.30 = 6,291.20/x
3. Step 3: Cross multiply
   16,287.89x = 24,429.30 × 6,291.20
4. Step 4: Simplify right side
   16,287.89x = 153,689,490.01
5. Step 5: Solve for x
   x = 153,689,490.01/16,287.89
6. Step 6: Final answer
   x = 9,435.82