Finding the Fourth Proportional to 7,171.62, 9,897.61 and 4,340.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,171.62 : 9,897.61 = 4,340.55 : x
2. Step 2: Convert to fraction form
   7,171.62/9,897.61 = 4,340.55/x
3. Step 3: Cross multiply
   7,171.62x = 9,897.61 × 4,340.55
4. Step 4: Simplify right side
   7,171.62x = 42,961,105.49
5. Step 5: Solve for x
   x = 42,961,105.49/7,171.62
6. Step 6: Final answer
   x = 5,990.43