Finding the Fourth Proportional to 12,499.27, 18,739.62 and 7,567.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.27 : 18,739.62 = 7,567.73 : x
2. Step 2: Convert to fraction form
   12,499.27/18,739.62 = 7,567.73/x
3. Step 3: Cross multiply
   12,499.27x = 18,739.62 × 7,567.73
4. Step 4: Simplify right side
   12,499.27x = 141,816,384.46
5. Step 5: Solve for x
   x = 141,816,384.46/12,499.27
6. Step 6: Final answer
   x = 11,345.97