Finding the Fourth Proportional to 15,222.24, 21,009.15 and 9,557.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,222.24 : 21,009.15 = 9,557.82 : x
2. Step 2: Convert to fraction form
   15,222.24/21,009.15 = 9,557.82/x
3. Step 3: Cross multiply
   15,222.24x = 21,009.15 × 9,557.82
4. Step 4: Simplify right side
   15,222.24x = 200,801,674.05
5. Step 5: Solve for x
   x = 200,801,674.05/15,222.24
6. Step 6: Final answer
   x = 13,191.34