Finding the Fourth Proportional to 12,153.34, 18,223.05 and 7,226.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,153.34 : 18,223.05 = 7,226.42 : x
2. Step 2: Convert to fraction form
   12,153.34/18,223.05 = 7,226.42/x
3. Step 3: Cross multiply
   12,153.34x = 18,223.05 × 7,226.42
4. Step 4: Simplify right side
   12,153.34x = 131,687,412.98
5. Step 5: Solve for x
   x = 131,687,412.98/12,153.34
6. Step 6: Final answer
   x = 10,835.50