Finding the Fourth Proportional to 21,728.72, 32,598.54 and 6,146.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,728.72 : 32,598.54 = 6,146.34 : x
2. Step 2: Convert to fraction form
   21,728.72/32,598.54 = 6,146.34/x
3. Step 3: Cross multiply
   21,728.72x = 32,598.54 × 6,146.34
4. Step 4: Simplify right side
   21,728.72x = 200,361,710.34
5. Step 5: Solve for x
   x = 200,361,710.34/21,728.72
6. Step 6: Final answer
   x = 9,221.05