Finding the Fourth Proportional to 21,002.37, 31,504.47 and 9,768.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,002.37 : 31,504.47 = 9,768.25 : x
2. Step 2: Convert to fraction form
   21,002.37/31,504.47 = 9,768.25/x
3. Step 3: Cross multiply
   21,002.37x = 31,504.47 × 9,768.25
4. Step 4: Simplify right side
   21,002.37x = 307,743,541.83
5. Step 5: Solve for x
   x = 307,743,541.83/21,002.37
6. Step 6: Final answer
   x = 14,652.80