Finding the Fourth Proportional to 3,828.78, 5,283.98 and 2,571.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,828.78 : 5,283.98 = 2,571.93 : x
2. Step 2: Convert to fraction form
   3,828.78/5,283.98 = 2,571.93/x
3. Step 3: Cross multiply
   3,828.78x = 5,283.98 × 2,571.93
4. Step 4: Simplify right side
   3,828.78x = 13,590,013.82
5. Step 5: Solve for x
   x = 13,590,013.82/3,828.78
6. Step 6: Final answer
   x = 3,549.44