Finding the Fourth Proportional to 3,803.81, 5,673.18 and 3,671.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,803.81 : 5,673.18 = 3,671.55 : x
2. Step 2: Convert to fraction form
   3,803.81/5,673.18 = 3,671.55/x
3. Step 3: Cross multiply
   3,803.81x = 5,673.18 × 3,671.55
4. Step 4: Simplify right side
   3,803.81x = 20,829,364.03
5. Step 5: Solve for x
   x = 20,829,364.03/3,803.81
6. Step 6: Final answer
   x = 5,475.93