Finding the Fourth Proportional to 15,796.29, 21,798.72 and 8,722.26

Step by Step Solution

1. Step 1: Write the proportion equation
   15,796.29 : 21,798.72 = 8,722.26 : x
2. Step 2: Convert to fraction form
   15,796.29/21,798.72 = 8,722.26/x
3. Step 3: Cross multiply
   15,796.29x = 21,798.72 × 8,722.26
4. Step 4: Simplify right side
   15,796.29x = 190,134,103.51
5. Step 5: Solve for x
   x = 190,134,103.51/15,796.29
6. Step 6: Final answer
   x = 12,036.63