Finding the Fourth Proportional to 3,970.52, 5,476.82 and 2,556.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.52 : 5,476.82 = 2,556.06 : x
2. Step 2: Convert to fraction form
   3,970.52/5,476.82 = 2,556.06/x
3. Step 3: Cross multiply
   3,970.52x = 5,476.82 × 2,556.06
4. Step 4: Simplify right side
   3,970.52x = 13,999,040.36
5. Step 5: Solve for x
   x = 13,999,040.36/3,970.52
6. Step 6: Final answer
   x = 3,525.74