Finding the Fourth Proportional to 3,607.49, 5,401.89 and 3,090.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,607.49 : 5,401.89 = 3,090.80 : x
2. Step 2: Convert to fraction form
   3,607.49/5,401.89 = 3,090.80/x
3. Step 3: Cross multiply
   3,607.49x = 5,401.89 × 3,090.80
4. Step 4: Simplify right side
   3,607.49x = 16,696,161.61
5. Step 5: Solve for x
   x = 16,696,161.61/3,607.49
6. Step 6: Final answer
   x = 4,628.19