Finding the Fourth Proportional to 5,643.50, 8,466.60 and 3,576.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,643.50 : 8,466.60 = 3,576.78 : x
2. Step 2: Convert to fraction form
   5,643.50/8,466.60 = 3,576.78/x
3. Step 3: Cross multiply
   5,643.50x = 8,466.60 × 3,576.78
4. Step 4: Simplify right side
   5,643.50x = 30,283,165.55
5. Step 5: Solve for x
   x = 30,283,165.55/5,643.50
6. Step 6: Final answer
   x = 5,366.03