Finding the Fourth Proportional to 13,212.50, 18,234.10 and 7,244.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,212.50 : 18,234.10 = 7,244.18 : x
2. Step 2: Convert to fraction form
   13,212.50/18,234.10 = 7,244.18/x
3. Step 3: Cross multiply
   13,212.50x = 18,234.10 × 7,244.18
4. Step 4: Simplify right side
   13,212.50x = 132,091,066.32
5. Step 5: Solve for x
   x = 132,091,066.32/13,212.50
6. Step 6: Final answer
   x = 9,997.44