Finding the Fourth Proportional to 3,793.10, 5,680.90 and 3,661.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,793.10 : 5,680.90 = 3,661.76 : x
2. Step 2: Convert to fraction form
   3,793.10/5,680.90 = 3,661.76/x
3. Step 3: Cross multiply
   3,793.10x = 5,680.90 × 3,661.76
4. Step 4: Simplify right side
   3,793.10x = 20,802,079.21
5. Step 5: Solve for x
   x = 20,802,079.21/3,793.10
6. Step 6: Final answer
   x = 5,484.20