Finding the Fourth Proportional to 14,109.48, 19,471.86 and 7,821.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,109.48 : 19,471.86 = 7,821.72 : x
2. Step 2: Convert to fraction form
   14,109.48/19,471.86 = 7,821.72/x
3. Step 3: Cross multiply
   14,109.48x = 19,471.86 × 7,821.72
4. Step 4: Simplify right side
   14,109.48x = 152,303,436.80
5. Step 5: Solve for x
   x = 152,303,436.80/14,109.48
6. Step 6: Final answer
   x = 10,794.40