Finding the Fourth Proportional to 13,191.98, 18,204.36 and 7,223.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,191.98 : 18,204.36 = 7,223.54 : x
2. Step 2: Convert to fraction form
   13,191.98/18,204.36 = 7,223.54/x
3. Step 3: Cross multiply
   13,191.98x = 18,204.36 × 7,223.54
4. Step 4: Simplify right side
   13,191.98x = 131,499,831.61
5. Step 5: Solve for x
   x = 131,499,831.61/13,191.98
6. Step 6: Final answer
   x = 9,968.17