Finding the Fourth Proportional to 21,196.18, 31,792.43 and 8,048.65

Step by Step Solution

1. Step 1: Write the proportion equation
   21,196.18 : 31,792.43 = 8,048.65 : x
2. Step 2: Convert to fraction form
   21,196.18/31,792.43 = 8,048.65/x
3. Step 3: Cross multiply
   21,196.18x = 31,792.43 × 8,048.65
4. Step 4: Simplify right side
   21,196.18x = 255,886,101.48
5. Step 5: Solve for x
   x = 255,886,101.48/21,196.18
6. Step 6: Final answer
   x = 12,072.27