Finding the Fourth Proportional to 16,521.12, 22,799.52 and 9,069.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,521.12 : 22,799.52 = 9,069.12 : x
2. Step 2: Convert to fraction form
   16,521.12/22,799.52 = 9,069.12/x
3. Step 3: Cross multiply
   16,521.12x = 22,799.52 × 9,069.12
4. Step 4: Simplify right side
   16,521.12x = 206,771,582.82
5. Step 5: Solve for x
   x = 206,771,582.82/16,521.12
6. Step 6: Final answer
   x = 12,515.59