Finding the Fourth Proportional to 5,571.01, 7,680.04 and 3,974.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,571.01 : 7,680.04 = 3,974.93 : x
2. Step 2: Convert to fraction form
   5,571.01/7,680.04 = 3,974.93/x
3. Step 3: Cross multiply
   5,571.01x = 7,680.04 × 3,974.93
4. Step 4: Simplify right side
   5,571.01x = 30,527,630.66
5. Step 5: Solve for x
   x = 30,527,630.66/5,571.01
6. Step 6: Final answer
   x = 5,479.73