Finding the Fourth Proportional to 13,192.23, 18,204.71 and 7,223.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,192.23 : 18,204.71 = 7,223.79 : x
2. Step 2: Convert to fraction form
   13,192.23/18,204.71 = 7,223.79/x
3. Step 3: Cross multiply
   13,192.23x = 18,204.71 × 7,223.79
4. Step 4: Simplify right side
   13,192.23x = 131,507,002.05
5. Step 5: Solve for x
   x = 131,507,002.05/13,192.23
6. Step 6: Final answer
   x = 9,968.52