Finding the Fourth Proportional to 3,976.02, 5,475.82 and 3,889.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.02 : 5,475.82 = 3,889.92 : x
2. Step 2: Convert to fraction form
   3,976.02/5,475.82 = 3,889.92/x
3. Step 3: Cross multiply
   3,976.02x = 5,475.82 × 3,889.92
4. Step 4: Simplify right side
   3,976.02x = 21,300,501.73
5. Step 5: Solve for x
   x = 21,300,501.73/3,976.02
6. Step 6: Final answer
   x = 5,357.24