Finding the Fourth Proportional to 14,385.72, 19,849.82 and 13,223.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,385.72 : 19,849.82 = 13,223.05 : x
2. Step 2: Convert to fraction form
   14,385.72/19,849.82 = 13,223.05/x
3. Step 3: Cross multiply
   14,385.72x = 19,849.82 × 13,223.05
4. Step 4: Simplify right side
   14,385.72x = 262,475,162.35
5. Step 5: Solve for x
   x = 262,475,162.35/14,385.72
6. Step 6: Final answer
   x = 18,245.54