Finding the Fourth Proportional to 3,686.07, 5,086.88 and 2,007.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.07 : 5,086.88 = 2,007.56 : x
2. Step 2: Convert to fraction form
   3,686.07/5,086.88 = 2,007.56/x
3. Step 3: Cross multiply
   3,686.07x = 5,086.88 × 2,007.56
4. Step 4: Simplify right side
   3,686.07x = 10,212,181.34
5. Step 5: Solve for x
   x = 10,212,181.34/3,686.07
6. Step 6: Final answer
   x = 2,770.48