Finding the Fourth Proportional to 3,897.61, 5,867.49 and 3,558.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.61 : 5,867.49 = 3,558.62 : x
2. Step 2: Convert to fraction form
   3,897.61/5,867.49 = 3,558.62/x
3. Step 3: Cross multiply
   3,897.61x = 5,867.49 × 3,558.62
4. Step 4: Simplify right side
   3,897.61x = 20,880,167.26
5. Step 5: Solve for x
   x = 20,880,167.26/3,897.61
6. Step 6: Final answer
   x = 5,357.17