Finding the Fourth Proportional to 7,155.86, 10,731.69 and 2,772.27

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.86 : 10,731.69 = 2,772.27 : x
2. Step 2: Convert to fraction form
   7,155.86/10,731.69 = 2,772.27/x
3. Step 3: Cross multiply
   7,155.86x = 10,731.69 × 2,772.27
4. Step 4: Simplify right side
   7,155.86x = 29,751,142.24
5. Step 5: Solve for x
   x = 29,751,142.24/7,155.86
6. Step 6: Final answer
   x = 4,157.59