Finding the Fourth Proportional to 3,664.11, 5,498.21 and 3,634.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664.11 : 5,498.21 = 3,634.35 : x
2. Step 2: Convert to fraction form
   3,664.11/5,498.21 = 3,634.35/x
3. Step 3: Cross multiply
   3,664.11x = 5,498.21 × 3,634.35
4. Step 4: Simplify right side
   3,664.11x = 19,982,401.34
5. Step 5: Solve for x
   x = 19,982,401.34/3,664.11
6. Step 6: Final answer
   x = 5,453.56