Finding the Fourth Proportional to 6,603.78, 9,113.29 and 3,619.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,603.78 : 9,113.29 = 3,619.55 : x
2. Step 2: Convert to fraction form
   6,603.78/9,113.29 = 3,619.55/x
3. Step 3: Cross multiply
   6,603.78x = 9,113.29 × 3,619.55
4. Step 4: Simplify right side
   6,603.78x = 32,986,008.82
5. Step 5: Solve for x
   x = 32,986,008.82/6,603.78
6. Step 6: Final answer
   x = 4,995.02