Finding the Fourth Proportional to 3,673.51, 5,500.43 and 3,090.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,673.51 : 5,500.43 = 3,090.31 : x
2. Step 2: Convert to fraction form
   3,673.51/5,500.43 = 3,090.31/x
3. Step 3: Cross multiply
   3,673.51x = 5,500.43 × 3,090.31
4. Step 4: Simplify right side
   3,673.51x = 16,998,018.38
5. Step 5: Solve for x
   x = 16,998,018.38/3,673.51
6. Step 6: Final answer
   x = 4,627.19