Finding the Fourth Proportional to 21,607.92, 32,420.52 and 9,304.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,607.92 : 32,420.52 = 9,304.56 : x
2. Step 2: Convert to fraction form
   21,607.92/32,420.52 = 9,304.56/x
3. Step 3: Cross multiply
   21,607.92x = 32,420.52 × 9,304.56
4. Step 4: Simplify right side
   21,607.92x = 301,658,673.57
5. Step 5: Solve for x
   x = 301,658,673.57/21,607.92
6. Step 6: Final answer
   x = 13,960.56