Finding the Fourth Proportional to 9,809.56, 14,714.20 and 3,964.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,809.56 : 14,714.20 = 3,964.60 : x
2. Step 2: Convert to fraction form
   9,809.56/14,714.20 = 3,964.60/x
3. Step 3: Cross multiply
   9,809.56x = 14,714.20 × 3,964.60
4. Step 4: Simplify right side
   9,809.56x = 58,335,917.32
5. Step 5: Solve for x
   x = 58,335,917.32/9,809.56
6. Step 6: Final answer
   x = 5,946.84