Finding the Fourth Proportional to 16,521.52, 22,789.68 and 9,802.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,521.52 : 22,789.68 = 9,802.72 : x
2. Step 2: Convert to fraction form
   16,521.52/22,789.68 = 9,802.72/x
3. Step 3: Cross multiply
   16,521.52x = 22,789.68 × 9,802.72
4. Step 4: Simplify right side
   16,521.52x = 223,400,851.93
5. Step 5: Solve for x
   x = 223,400,851.93/16,521.52
6. Step 6: Final answer
   x = 13,521.81