Finding the Fourth Proportional to 6,678.98, 9,216.72 and 3,694.63

Step by Step Solution

1. Step 1: Write the proportion equation
   6,678.98 : 9,216.72 = 3,694.63 : x
2. Step 2: Convert to fraction form
   6,678.98/9,216.72 = 3,694.63/x
3. Step 3: Cross multiply
   6,678.98x = 9,216.72 × 3,694.63
4. Step 4: Simplify right side
   6,678.98x = 34,052,364.45
5. Step 5: Solve for x
   x = 34,052,364.45/6,678.98
6. Step 6: Final answer
   x = 5,098.43