Finding the Fourth Proportional to 15,790.00, 21,789.78 and 8,716.27

Step by Step Solution

1. Step 1: Write the proportion equation
   15,790.00 : 21,789.78 = 8,716.27 : x
2. Step 2: Convert to fraction form
   15,790.00/21,789.78 = 8,716.27/x
3. Step 3: Cross multiply
   15,790.00x = 21,789.78 × 8,716.27
4. Step 4: Simplify right side
   15,790.00x = 189,925,496.77
5. Step 5: Solve for x
   x = 189,925,496.77/15,790.00
6. Step 6: Final answer
   x = 12,028.22