Finding the Fourth Proportional to 35,665.32, 53,429.82 and 21,629.64

Step by Step Solution

1. Step 1: Write the proportion equation
   35,665.32 : 53,429.82 = 21,629.64 : x
2. Step 2: Convert to fraction form
   35,665.32/53,429.82 = 21,629.64/x
3. Step 3: Cross multiply
   35,665.32x = 53,429.82 × 21,629.64
4. Step 4: Simplify right side
   35,665.32x = 1,155,667,771.86
5. Step 5: Solve for x
   x = 1,155,667,771.86/35,665.32
6. Step 6: Final answer
   x = 32,403.12