Finding the Fourth Proportional to 3,897.20, 5,843.64 and 3,436.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.20 : 5,843.64 = 3,436.04 : x
2. Step 2: Convert to fraction form
   3,897.20/5,843.64 = 3,436.04/x
3. Step 3: Cross multiply
   3,897.20x = 5,843.64 × 3,436.04
4. Step 4: Simplify right side
   3,897.20x = 20,078,980.79
5. Step 5: Solve for x
   x = 20,078,980.79/3,897.20
6. Step 6: Final answer
   x = 5,152.16