Finding the Fourth Proportional to 10,957.41, 15,120.31 and 6,111.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,957.41 : 15,120.31 = 6,111.83 : x
2. Step 2: Convert to fraction form
   10,957.41/15,120.31 = 6,111.83/x
3. Step 3: Cross multiply
   10,957.41x = 15,120.31 × 6,111.83
4. Step 4: Simplify right side
   10,957.41x = 92,412,786.79
5. Step 5: Solve for x
   x = 92,412,786.79/10,957.41
6. Step 6: Final answer
   x = 8,433.82