Finding the Fourth Proportional to 21,076.30, 31,630.04 and 9,983.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,076.30 : 31,630.04 = 9,983.01 : x
2. Step 2: Convert to fraction form
   21,076.30/31,630.04 = 9,983.01/x
3. Step 3: Cross multiply
   21,076.30x = 31,630.04 × 9,983.01
4. Step 4: Simplify right side
   21,076.30x = 315,763,111.75
5. Step 5: Solve for x
   x = 315,763,111.75/21,076.30
6. Step 6: Final answer
   x = 14,981.90