Finding the Fourth Proportional to 15,751.86, 21,735.72 and 9,036.42

Step by Step Solution

1. Step 1: Write the proportion equation
   15,751.86 : 21,735.72 = 9,036.42 : x
2. Step 2: Convert to fraction form
   15,751.86/21,735.72 = 9,036.42/x
3. Step 3: Cross multiply
   15,751.86x = 21,735.72 × 9,036.42
4. Step 4: Simplify right side
   15,751.86x = 196,413,094.92
5. Step 5: Solve for x
   x = 196,413,094.92/15,751.86
6. Step 6: Final answer
   x = 12,469.20