Finding the Fourth Proportional to 14,109, 19,470.42 and 7,821.80

Step by Step Solution

1. Step 1: Write the proportion equation
   14,109 : 19,470.42 = 7,821.80 : x
2. Step 2: Convert to fraction form
   14,109/19,470.42 = 7,821.80/x
3. Step 3: Cross multiply
   14,109x = 19,470.42 × 7,821.80
4. Step 4: Simplify right side
   14,109x = 152,293,731.16
5. Step 5: Solve for x
   x = 152,293,731.16/14,109
6. Step 6: Final answer
   x = 10,794.08