Finding the Fourth Proportional to 8,151.03, 12,231.41 and 2,957.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,151.03 : 12,231.41 = 2,957.31 : x
2. Step 2: Convert to fraction form
   8,151.03/12,231.41 = 2,957.31/x
3. Step 3: Cross multiply
   8,151.03x = 12,231.41 × 2,957.31
4. Step 4: Simplify right side
   8,151.03x = 36,172,056.32
5. Step 5: Solve for x
   x = 36,172,056.32/8,151.03
6. Step 6: Final answer
   x = 4,437.73