Finding the Fourth Proportional to 16,521, 22,798.71 and 9,447.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,521 : 22,798.71 = 9,447.18 : x
2. Step 2: Convert to fraction form
   16,521/22,798.71 = 9,447.18/x
3. Step 3: Cross multiply
   16,521x = 22,798.71 × 9,447.18
4. Step 4: Simplify right side
   16,521x = 215,383,517.14
5. Step 5: Solve for x
   x = 215,383,517.14/16,521
6. Step 6: Final answer
   x = 13,036.95