Finding the Fourth Proportional to 14,091.72, 21,131.34 and 4,229.11

Step by Step Solution

1. Step 1: Write the proportion equation
   14,091.72 : 21,131.34 = 4,229.11 : x
2. Step 2: Convert to fraction form
   14,091.72/21,131.34 = 4,229.11/x
3. Step 3: Cross multiply
   14,091.72x = 21,131.34 × 4,229.11
4. Step 4: Simplify right side
   14,091.72x = 89,366,655.65
5. Step 5: Solve for x
   x = 89,366,655.65/14,091.72
6. Step 6: Final answer
   x = 6,341.79