Finding the Fourth Proportional to 16,401.56, 24,585.89 and 8,499.65

Step by Step Solution

1. Step 1: Write the proportion equation
   16,401.56 : 24,585.89 = 8,499.65 : x
2. Step 2: Convert to fraction form
   16,401.56/24,585.89 = 8,499.65/x
3. Step 3: Cross multiply
   16,401.56x = 24,585.89 × 8,499.65
4. Step 4: Simplify right side
   16,401.56x = 208,971,294.51
5. Step 5: Solve for x
   x = 208,971,294.51/16,401.56
6. Step 6: Final answer
   x = 12,740.94