Finding the Fourth Proportional to 12,669.72, 19,007.46 and 4,349.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.72 : 19,007.46 = 4,349.40 : x
2. Step 2: Convert to fraction form
   12,669.72/19,007.46 = 4,349.40/x
3. Step 3: Cross multiply
   12,669.72x = 19,007.46 × 4,349.40
4. Step 4: Simplify right side
   12,669.72x = 82,671,046.52
5. Step 5: Solve for x
   x = 82,671,046.52/12,669.72
6. Step 6: Final answer
   x = 6,525.09