Finding the Fourth Proportional to 16,821.34, 23,213.52 and 9,651.54

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.34 : 23,213.52 = 9,651.54 : x
2. Step 2: Convert to fraction form
   16,821.34/23,213.52 = 9,651.54/x
3. Step 3: Cross multiply
   16,821.34x = 23,213.52 × 9,651.54
4. Step 4: Simplify right side
   16,821.34x = 224,046,216.82
5. Step 5: Solve for x
   x = 224,046,216.82/16,821.34
6. Step 6: Final answer
   x = 13,319.17