Finding the Fourth Proportional to 12,665.50, 18,998.52 and 4,345.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.50 : 18,998.52 = 4,345.48 : x
2. Step 2: Convert to fraction form
   12,665.50/18,998.52 = 4,345.48/x
3. Step 3: Cross multiply
   12,665.50x = 18,998.52 × 4,345.48
4. Step 4: Simplify right side
   12,665.50x = 82,557,688.69
5. Step 5: Solve for x
   x = 82,557,688.69/12,665.50
6. Step 6: Final answer
   x = 6,518.31