Finding the Fourth Proportional to 14,150.94, 21,229.59 and 4,290.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,150.94 : 21,229.59 = 4,290.30 : x
2. Step 2: Convert to fraction form
   14,150.94/21,229.59 = 4,290.30/x
3. Step 3: Cross multiply
   14,150.94x = 21,229.59 × 4,290.30
4. Step 4: Simplify right side
   14,150.94x = 91,081,309.98
5. Step 5: Solve for x
   x = 91,081,309.98/14,150.94
6. Step 6: Final answer
   x = 6,436.41