Finding the Fourth Proportional to 3,679.02, 5,486.94 and 3,649.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.02 : 5,486.94 = 3,649.86 : x
2. Step 2: Convert to fraction form
   3,679.02/5,486.94 = 3,649.86/x
3. Step 3: Cross multiply
   3,679.02x = 5,486.94 × 3,649.86
4. Step 4: Simplify right side
   3,679.02x = 20,026,562.83
5. Step 5: Solve for x
   x = 20,026,562.83/3,679.02
6. Step 6: Final answer
   x = 5,443.45