Finding the Fourth Proportional to 3,661.82, 5,498.20 and 3,607.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661.82 : 5,498.20 = 3,607.15 : x
2. Step 2: Convert to fraction form
   3,661.82/5,498.20 = 3,607.15/x
3. Step 3: Cross multiply
   3,661.82x = 5,498.20 × 3,607.15
4. Step 4: Simplify right side
   3,661.82x = 19,832,832.13
5. Step 5: Solve for x
   x = 19,832,832.13/3,661.82
6. Step 6: Final answer
   x = 5,416.11