Finding the Fourth Proportional to 6,642.72, 9,166.74 and 3,658.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,642.72 : 9,166.74 = 3,658.56 : x
2. Step 2: Convert to fraction form
   6,642.72/9,166.74 = 3,658.56/x
3. Step 3: Cross multiply
   6,642.72x = 9,166.74 × 3,658.56
4. Step 4: Simplify right side
   6,642.72x = 33,537,068.29
5. Step 5: Solve for x
   x = 33,537,068.29/6,642.72
6. Step 6: Final answer
   x = 5,048.70