Finding the Fourth Proportional to 6,480.19, 8,942.72 and 3,685.87

Step by Step Solution

1. Step 1: Write the proportion equation
   6,480.19 : 8,942.72 = 3,685.87 : x
2. Step 2: Convert to fraction form
   6,480.19/8,942.72 = 3,685.87/x
3. Step 3: Cross multiply
   6,480.19x = 8,942.72 × 3,685.87
4. Step 4: Simplify right side
   6,480.19x = 32,961,703.37
5. Step 5: Solve for x
   x = 32,961,703.37/6,480.19
6. Step 6: Final answer
   x = 5,086.53