Finding the Fourth Proportional to 14,185.27, 19,574.98 and 7,811.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,185.27 : 19,574.98 = 7,811.72 : x
2. Step 2: Convert to fraction form
   14,185.27/19,574.98 = 7,811.72/x
3. Step 3: Cross multiply
   14,185.27x = 19,574.98 × 7,811.72
4. Step 4: Simplify right side
   14,185.27x = 152,914,262.77
5. Step 5: Solve for x
   x = 152,914,262.77/14,185.27
6. Step 6: Final answer
   x = 10,779.79