Finding the Fourth Proportional to 3,694.56, 5,548.43 and 3,545.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,694.56 : 5,548.43 = 3,545.90 : x
2. Step 2: Convert to fraction form
   3,694.56/5,548.43 = 3,545.90/x
3. Step 3: Cross multiply
   3,694.56x = 5,548.43 × 3,545.90
4. Step 4: Simplify right side
   3,694.56x = 19,674,132.47
5. Step 5: Solve for x
   x = 19,674,132.47/3,694.56
6. Step 6: Final answer
   x = 5,325.16