Finding the Fourth Proportional to 5,921.61, 8,174.76 and 3,684.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,921.61 : 8,174.76 = 3,684.21 : x
2. Step 2: Convert to fraction form
   5,921.61/8,174.76 = 3,684.21/x
3. Step 3: Cross multiply
   5,921.61x = 8,174.76 × 3,684.21
4. Step 4: Simplify right side
   5,921.61x = 30,117,532.54
5. Step 5: Solve for x
   x = 30,117,532.54/5,921.61
6. Step 6: Final answer
   x = 5,086.04