Finding the Fourth Proportional to 16,399.78, 24,596.61 and 4,392.07

Step by Step Solution

1. Step 1: Write the proportion equation
   16,399.78 : 24,596.61 = 4,392.07 : x
2. Step 2: Convert to fraction form
   16,399.78/24,596.61 = 4,392.07/x
3. Step 3: Cross multiply
   16,399.78x = 24,596.61 × 4,392.07
4. Step 4: Simplify right side
   16,399.78x = 108,030,032.88
5. Step 5: Solve for x
   x = 108,030,032.88/16,399.78
6. Step 6: Final answer
   x = 6,587.29