Finding the Fourth Proportional to 9,976.31, 13,766.46 and 5,727.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.31 : 13,766.46 = 5,727.28 : x
2. Step 2: Convert to fraction form
   9,976.31/13,766.46 = 5,727.28/x
3. Step 3: Cross multiply
   9,976.31x = 13,766.46 × 5,727.28
4. Step 4: Simplify right side
   9,976.31x = 78,844,302.20
5. Step 5: Solve for x
   x = 78,844,302.20/9,976.31
6. Step 6: Final answer
   x = 7,903.15