Finding the Fourth Proportional to 3,828.38, 5,283.54 and 2,572.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,828.38 : 5,283.54 = 2,572.06 : x
2. Step 2: Convert to fraction form
   3,828.38/5,283.54 = 2,572.06/x
3. Step 3: Cross multiply
   3,828.38x = 5,283.54 × 2,572.06
4. Step 4: Simplify right side
   3,828.38x = 13,589,581.89
5. Step 5: Solve for x
   x = 13,589,581.89/3,828.38
6. Step 6: Final answer
   x = 3,549.70