Finding the Fourth Proportional to 15,796.17, 21,798.72 and 8,723.07

Step by Step Solution

1. Step 1: Write the proportion equation
   15,796.17 : 21,798.72 = 8,723.07 : x
2. Step 2: Convert to fraction form
   15,796.17/21,798.72 = 8,723.07/x
3. Step 3: Cross multiply
   15,796.17x = 21,798.72 × 8,723.07
4. Step 4: Simplify right side
   15,796.17x = 190,151,760.47
5. Step 5: Solve for x
   x = 190,151,760.47/15,796.17
6. Step 6: Final answer
   x = 12,037.84