Finding the Fourth Proportional to 2,661.33, 3,991.45 and 2,529.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.33 : 3,991.45 = 2,529.62 : x
2. Step 2: Convert to fraction form
   2,661.33/3,991.45 = 2,529.62/x
3. Step 3: Cross multiply
   2,661.33x = 3,991.45 × 2,529.62
4. Step 4: Simplify right side
   2,661.33x = 10,096,851.75
5. Step 5: Solve for x
   x = 10,096,851.75/2,661.33
6. Step 6: Final answer
   x = 3,793.91