Finding the Fourth Proportional to 3,995.06, 5,516.57 and 3,816.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,995.06 : 5,516.57 = 3,816.86 : x
2. Step 2: Convert to fraction form
   3,995.06/5,516.57 = 3,816.86/x
3. Step 3: Cross multiply
   3,995.06x = 5,516.57 × 3,816.86
4. Step 4: Simplify right side
   3,995.06x = 21,055,957.33
5. Step 5: Solve for x
   x = 21,055,957.33/3,995.06
6. Step 6: Final answer
   x = 5,270.50