Finding the Fourth Proportional to 3,903.52, 5,859.12 and 3,586.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903.52 : 5,859.12 = 3,586.72 : x
2. Step 2: Convert to fraction form
   3,903.52/5,859.12 = 3,586.72/x
3. Step 3: Cross multiply
   3,903.52x = 5,859.12 × 3,586.72
4. Step 4: Simplify right side
   3,903.52x = 21,015,022.89
5. Step 5: Solve for x
   x = 21,015,022.89/3,903.52
6. Step 6: Final answer
   x = 5,383.61