Finding the Fourth Proportional to 2,772.82, 4,139.38 and 2,570.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.82 : 4,139.38 = 2,570.32 : x
2. Step 2: Convert to fraction form
   2,772.82/4,139.38 = 2,570.32/x
3. Step 3: Cross multiply
   2,772.82x = 4,139.38 × 2,570.32
4. Step 4: Simplify right side
   2,772.82x = 10,639,531.20
5. Step 5: Solve for x
   x = 10,639,531.20/2,772.82
6. Step 6: Final answer
   x = 3,837.08