Finding the Fourth Proportional to 3,823.22, 5,276.25 and 2,877.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,823.22 : 5,276.25 = 2,877.31 : x
2. Step 2: Convert to fraction form
   3,823.22/5,276.25 = 2,877.31/x
3. Step 3: Cross multiply
   3,823.22x = 5,276.25 × 2,877.31
4. Step 4: Simplify right side
   3,823.22x = 15,181,406.89
5. Step 5: Solve for x
   x = 15,181,406.89/3,823.22
6. Step 6: Final answer
   x = 3,970.84