Finding the Fourth Proportional to 14,109.50, 19,471.79 and 7,821.88

Step by Step Solution

1. Step 1: Write the proportion equation
   14,109.50 : 19,471.79 = 7,821.88 : x
2. Step 2: Convert to fraction form
   14,109.50/19,471.79 = 7,821.88/x
3. Step 3: Cross multiply
   14,109.50x = 19,471.79 × 7,821.88
4. Step 4: Simplify right side
   14,109.50x = 152,306,004.77
5. Step 5: Solve for x
   x = 152,306,004.77/14,109.50
6. Step 6: Final answer
   x = 10,794.57