Finding the Fourth Proportional to 14,012.72, 21,015.49 and 4,149.69

Step by Step Solution

1. Step 1: Write the proportion equation
   14,012.72 : 21,015.49 = 4,149.69 : x
2. Step 2: Convert to fraction form
   14,012.72/21,015.49 = 4,149.69/x
3. Step 3: Cross multiply
   14,012.72x = 21,015.49 × 4,149.69
4. Step 4: Simplify right side
   14,012.72x = 87,207,831.61
5. Step 5: Solve for x
   x = 87,207,831.61/14,012.72
6. Step 6: Final answer
   x = 6,223.48