Finding the Fourth Proportional to 16,328.55, 22,529.61 and 9,521.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,328.55 : 22,529.61 = 9,521.49 : x
2. Step 2: Convert to fraction form
   16,328.55/22,529.61 = 9,521.49/x
3. Step 3: Cross multiply
   16,328.55x = 22,529.61 × 9,521.49
4. Step 4: Simplify right side
   16,328.55x = 214,515,456.32
5. Step 5: Solve for x
   x = 214,515,456.32/16,328.55
6. Step 6: Final answer
   x = 13,137.45