Finding the Fourth Proportional to 6,461.67, 8,916.89 and 3,942.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,461.67 : 8,916.89 = 3,942.88 : x
2. Step 2: Convert to fraction form
   6,461.67/8,916.89 = 3,942.88/x
3. Step 3: Cross multiply
   6,461.67x = 8,916.89 × 3,942.88
4. Step 4: Simplify right side
   6,461.67x = 35,158,185.24
5. Step 5: Solve for x
   x = 35,158,185.24/6,461.67
6. Step 6: Final answer
   x = 5,441.03