Finding the Fourth Proportional to 15,796.72, 21,799.38 and 8,723.08

Step by Step Solution

1. Step 1: Write the proportion equation
   15,796.72 : 21,799.38 = 8,723.08 : x
2. Step 2: Convert to fraction form
   15,796.72/21,799.38 = 8,723.08/x
3. Step 3: Cross multiply
   15,796.72x = 21,799.38 × 8,723.08
4. Step 4: Simplify right side
   15,796.72x = 190,157,735.69
5. Step 5: Solve for x
   x = 190,157,735.69/15,796.72
6. Step 6: Final answer
   x = 12,037.80