Finding the Fourth Proportional to 35,514.78, 53,272.20 and 12,141.42

Step by Step Solution

1. Step 1: Write the proportion equation
   35,514.78 : 53,272.20 = 12,141.42 : x
2. Step 2: Convert to fraction form
   35,514.78/53,272.20 = 12,141.42/x
3. Step 3: Cross multiply
   35,514.78x = 53,272.20 × 12,141.42
4. Step 4: Simplify right side
   35,514.78x = 646,800,154.52
5. Step 5: Solve for x
   x = 646,800,154.52/35,514.78
6. Step 6: Final answer
   x = 18,212.14