Finding the Fourth Proportional to 6,656.28, 9,986.50 and 1,976.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,656.28 : 9,986.50 = 1,976.31 : x
2. Step 2: Convert to fraction form
   6,656.28/9,986.50 = 1,976.31/x
3. Step 3: Cross multiply
   6,656.28x = 9,986.50 × 1,976.31
4. Step 4: Simplify right side
   6,656.28x = 19,736,419.82
5. Step 5: Solve for x
   x = 19,736,419.82/6,656.28
6. Step 6: Final answer
   x = 2,965.08