Finding the Fourth Proportional to 6,603.57, 9,115.83 and 4,621.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,603.57 : 9,115.83 = 4,621.91 : x
2. Step 2: Convert to fraction form
   6,603.57/9,115.83 = 4,621.91/x
3. Step 3: Cross multiply
   6,603.57x = 9,115.83 × 4,621.91
4. Step 4: Simplify right side
   6,603.57x = 42,132,500.26
5. Step 5: Solve for x
   x = 42,132,500.26/6,603.57
6. Step 6: Final answer
   x = 6,380.26