Finding the Fourth Proportional to 12,550.89, 18,800.70 and 7,007.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,550.89 : 18,800.70 = 7,007.18 : x
2. Step 2: Convert to fraction form
   12,550.89/18,800.70 = 7,007.18/x
3. Step 3: Cross multiply
   12,550.89x = 18,800.70 × 7,007.18
4. Step 4: Simplify right side
   12,550.89x = 131,739,936.03
5. Step 5: Solve for x
   x = 131,739,936.03/12,550.89
6. Step 6: Final answer
   x = 10,496.46