Finding the Fourth Proportional to 12,233.49, 18,345.54 and 5,209.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,233.49 : 18,345.54 = 5,209.05 : x
2. Step 2: Convert to fraction form
   12,233.49/18,345.54 = 5,209.05/x
3. Step 3: Cross multiply
   12,233.49x = 18,345.54 × 5,209.05
4. Step 4: Simplify right side
   12,233.49x = 95,562,835.14
5. Step 5: Solve for x
   x = 95,562,835.14/12,233.49
6. Step 6: Final answer
   x = 7,811.58