Finding the Fourth Proportional to 14,327.27, 21,488.10 and 7,209.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,327.27 : 21,488.10 = 7,209.60 : x
2. Step 2: Convert to fraction form
   14,327.27/21,488.10 = 7,209.60/x
3. Step 3: Cross multiply
   14,327.27x = 21,488.10 × 7,209.60
4. Step 4: Simplify right side
   14,327.27x = 154,920,605.76
5. Step 5: Solve for x
   x = 154,920,605.76/14,327.27
6. Step 6: Final answer
   x = 10,812.99