Finding the Fourth Proportional to 5,616.15, 8,420.18 and 3,669.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,616.15 : 8,420.18 = 3,669.45 : x
2. Step 2: Convert to fraction form
   5,616.15/8,420.18 = 3,669.45/x
3. Step 3: Cross multiply
   5,616.15x = 8,420.18 × 3,669.45
4. Step 4: Simplify right side
   5,616.15x = 30,897,411.15
5. Step 5: Solve for x
   x = 30,897,411.15/5,616.15
6. Step 6: Final answer
   x = 5,501.53