Finding the Fourth Proportional to 5,745.59, 8,620.56 and 3,913.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,745.59 : 8,620.56 = 3,913.98 : x
2. Step 2: Convert to fraction form
   5,745.59/8,620.56 = 3,913.98/x
3. Step 3: Cross multiply
   5,745.59x = 8,620.56 × 3,913.98
4. Step 4: Simplify right side
   5,745.59x = 33,740,699.43
5. Step 5: Solve for x
   x = 33,740,699.43/5,745.59
6. Step 6: Final answer
   x = 5,872.45