Finding the Fourth Proportional to 5,433.66, 8,139.55 and 3,769.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,433.66 : 8,139.55 = 3,769.72 : x
2. Step 2: Convert to fraction form
   5,433.66/8,139.55 = 3,769.72/x
3. Step 3: Cross multiply
   5,433.66x = 8,139.55 × 3,769.72
4. Step 4: Simplify right side
   5,433.66x = 30,683,824.43
5. Step 5: Solve for x
   x = 30,683,824.43/5,433.66
6. Step 6: Final answer
   x = 5,646.99