Finding the Fourth Proportional to 3,715.86, 5,116.23 and 3,155.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.86 : 5,116.23 = 3,155.22 : x
2. Step 2: Convert to fraction form
   3,715.86/5,116.23 = 3,155.22/x
3. Step 3: Cross multiply
   3,715.86x = 5,116.23 × 3,155.22
4. Step 4: Simplify right side
   3,715.86x = 16,142,831.22
5. Step 5: Solve for x
   x = 16,142,831.22/3,715.86
6. Step 6: Final answer
   x = 4,344.31