Finding the Fourth Proportional to 35,665.38, 53,452.28 and 13,452.30

Step by Step Solution

1. Step 1: Write the proportion equation
   35,665.38 : 53,452.28 = 13,452.30 : x
2. Step 2: Convert to fraction form
   35,665.38/53,452.28 = 13,452.30/x
3. Step 3: Cross multiply
   35,665.38x = 53,452.28 × 13,452.30
4. Step 4: Simplify right side
   35,665.38x = 719,056,139.87
5. Step 5: Solve for x
   x = 719,056,139.87/35,665.38
6. Step 6: Final answer
   x = 20,161.18