Finding the Fourth Proportional to 15,796.54, 21,799.05 and 8,722.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,796.54 : 21,799.05 = 8,722.82 : x
2. Step 2: Convert to fraction form
   15,796.54/21,799.05 = 8,722.82/x
3. Step 3: Cross multiply
   15,796.54x = 21,799.05 × 8,722.82
4. Step 4: Simplify right side
   15,796.54x = 190,149,189.32
5. Step 5: Solve for x
   x = 190,149,189.32/15,796.54
6. Step 6: Final answer
   x = 12,037.39