Finding the Fourth Proportional to 16,805.42, 25,223.70 and 8,491.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,805.42 : 25,223.70 = 8,491.30 : x
2. Step 2: Convert to fraction form
   16,805.42/25,223.70 = 8,491.30/x
3. Step 3: Cross multiply
   16,805.42x = 25,223.70 × 8,491.30
4. Step 4: Simplify right side
   16,805.42x = 214,182,003.81
5. Step 5: Solve for x
   x = 214,182,003.81/16,805.42
6. Step 6: Final answer
   x = 12,744.82