Finding the Fourth Proportional to 6,661.82, 9,992.72 and 3,698.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,661.82 : 9,992.72 = 3,698.88 : x
2. Step 2: Convert to fraction form
   6,661.82/9,992.72 = 3,698.88/x
3. Step 3: Cross multiply
   6,661.82x = 9,992.72 × 3,698.88
4. Step 4: Simplify right side
   6,661.82x = 36,961,872.15
5. Step 5: Solve for x
   x = 36,961,872.15/6,661.82
6. Step 6: Final answer
   x = 5,548.31