Finding the Fourth Proportional to 31,976.72, 47,968.28 and 9,789.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,976.72 : 47,968.28 = 9,789.84 : x
2. Step 2: Convert to fraction form
   31,976.72/47,968.28 = 9,789.84/x
3. Step 3: Cross multiply
   31,976.72x = 47,968.28 × 9,789.84
4. Step 4: Simplify right side
   31,976.72x = 469,601,786.28
5. Step 5: Solve for x
   x = 469,601,786.28/31,976.72
6. Step 6: Final answer
   x = 14,685.74