Finding the Fourth Proportional to 21,162.48, 31,758.33 and 7,311.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.48 : 31,758.33 = 7,311.48 : x
2. Step 2: Convert to fraction form
   21,162.48/31,758.33 = 7,311.48/x
3. Step 3: Cross multiply
   21,162.48x = 31,758.33 × 7,311.48
4. Step 4: Simplify right side
   21,162.48x = 232,200,394.63
5. Step 5: Solve for x
   x = 232,200,394.63/21,162.48
6. Step 6: Final answer
   x = 10,972.27