Finding the Fourth Proportional to 3,591.89, 5,391.47 and 2,553.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591.89 : 5,391.47 = 2,553.07 : x
2. Step 2: Convert to fraction form
   3,591.89/5,391.47 = 2,553.07/x
3. Step 3: Cross multiply
   3,591.89x = 5,391.47 × 2,553.07
4. Step 4: Simplify right side
   3,591.89x = 13,764,800.31
5. Step 5: Solve for x
   x = 13,764,800.31/3,591.89
6. Step 6: Final answer
   x = 3,832.19