Finding the Fourth Proportional to 3,759.31, 5,632.78 and 3,615.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,759.31 : 5,632.78 = 3,615.28 : x
2. Step 2: Convert to fraction form
   3,759.31/5,632.78 = 3,615.28/x
3. Step 3: Cross multiply
   3,759.31x = 5,632.78 × 3,615.28
4. Step 4: Simplify right side
   3,759.31x = 20,364,076.88
5. Step 5: Solve for x
   x = 20,364,076.88/3,759.31
6. Step 6: Final answer
   x = 5,416.97