Finding the Fourth Proportional to 2,685.72, 3,710.10 and 2,556.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,685.72 : 3,710.10 = 2,556.12 : x
2. Step 2: Convert to fraction form
   2,685.72/3,710.10 = 2,556.12/x
3. Step 3: Cross multiply
   2,685.72x = 3,710.10 × 2,556.12
4. Step 4: Simplify right side
   2,685.72x = 9,483,460.81
5. Step 5: Solve for x
   x = 9,483,460.81/2,685.72
6. Step 6: Final answer
   x = 3,531.07