Finding the Fourth Proportional to 3,837.20, 5,365.60 and 3,837.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,837.20 : 5,365.60 = 3,837.20 : x
2. Step 2: Convert to fraction form
   3,837.20/5,365.60 = 3,837.20/x
3. Step 3: Cross multiply
   3,837.20x = 5,365.60 × 3,837.20
4. Step 4: Simplify right side
   3,837.20x = 20,588,880.32
5. Step 5: Solve for x
   x = 20,588,880.32/3,837.20
6. Step 6: Final answer
   x = 5,365.60