Finding the Fourth Proportional to 6,609.76, 9,900.84 and 3,102.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,609.76 : 9,900.84 = 3,102.82 : x
2. Step 2: Convert to fraction form
   6,609.76/9,900.84 = 3,102.82/x
3. Step 3: Cross multiply
   6,609.76x = 9,900.84 × 3,102.82
4. Step 4: Simplify right side
   6,609.76x = 30,720,524.37
5. Step 5: Solve for x
   x = 30,720,524.37/6,609.76
6. Step 6: Final answer
   x = 4,647.75