Finding the Fourth Proportional to 14,008.72, 21,013.32 and 4,147.98

Step by Step Solution

1. Step 1: Write the proportion equation
   14,008.72 : 21,013.32 = 4,147.98 : x
2. Step 2: Convert to fraction form
   14,008.72/21,013.32 = 4,147.98/x
3. Step 3: Cross multiply
   14,008.72x = 21,013.32 × 4,147.98
4. Step 4: Simplify right side
   14,008.72x = 87,162,831.09
5. Step 5: Solve for x
   x = 87,162,831.09/14,008.72
6. Step 6: Final answer
   x = 6,222.04