Finding the Fourth Proportional to 6,603.55, 9,855.71 and 5,710.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,603.55 : 9,855.71 = 5,710.15 : x
2. Step 2: Convert to fraction form
   6,603.55/9,855.71 = 5,710.15/x
3. Step 3: Cross multiply
   6,603.55x = 9,855.71 × 5,710.15
4. Step 4: Simplify right side
   6,603.55x = 56,277,564.32
5. Step 5: Solve for x
   x = 56,277,564.32/6,603.55
6. Step 6: Final answer
   x = 8,522.32