Finding the Fourth Proportional to 3,657.94, 5,475.56 and 2,958.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,657.94 : 5,475.56 = 2,958.78 : x
2. Step 2: Convert to fraction form
   3,657.94/5,475.56 = 2,958.78/x
3. Step 3: Cross multiply
   3,657.94x = 5,475.56 × 2,958.78
4. Step 4: Simplify right side
   3,657.94x = 16,200,977.42
5. Step 5: Solve for x
   x = 16,200,977.42/3,657.94
6. Step 6: Final answer
   x = 4,428.99