Finding the Fourth Proportional to 35,785.34, 53,645.16 and 12,395.42

Step by Step Solution

1. Step 1: Write the proportion equation
   35,785.34 : 53,645.16 = 12,395.42 : x
2. Step 2: Convert to fraction form
   35,785.34/53,645.16 = 12,395.42/x
3. Step 3: Cross multiply
   35,785.34x = 53,645.16 × 12,395.42
4. Step 4: Simplify right side
   35,785.34x = 664,954,289.17
5. Step 5: Solve for x
   x = 664,954,289.17/35,785.34
6. Step 6: Final answer
   x = 18,581.75