Finding the Fourth Proportional to 5,748.62, 8,621.58 and 3,665.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,748.62 : 8,621.58 = 3,665.58 : x
2. Step 2: Convert to fraction form
   5,748.62/8,621.58 = 3,665.58/x
3. Step 3: Cross multiply
   5,748.62x = 8,621.58 × 3,665.58
4. Step 4: Simplify right side
   5,748.62x = 31,603,091.22
5. Step 5: Solve for x
   x = 31,603,091.22/5,748.62
6. Step 6: Final answer
   x = 5,497.51