Finding the Fourth Proportional to 15,800.73, 21,804.83 and 8,630.61

Step by Step Solution

1. Step 1: Write the proportion equation
   15,800.73 : 21,804.83 = 8,630.61 : x
2. Step 2: Convert to fraction form
   15,800.73/21,804.83 = 8,630.61/x
3. Step 3: Cross multiply
   15,800.73x = 21,804.83 × 8,630.61
4. Step 4: Simplify right side
   15,800.73x = 188,188,940.69
5. Step 5: Solve for x
   x = 188,188,940.69/15,800.73
6. Step 6: Final answer
   x = 11,910.14