Finding the Fourth Proportional to 12,300.15, 18,450.49 and 4,908.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.15 : 18,450.49 = 4,908.09 : x
2. Step 2: Convert to fraction form
   12,300.15/18,450.49 = 4,908.09/x
3. Step 3: Cross multiply
   12,300.15x = 18,450.49 × 4,908.09
4. Step 4: Simplify right side
   12,300.15x = 90,556,665.46
5. Step 5: Solve for x
   x = 90,556,665.46/12,300.15
6. Step 6: Final answer
   x = 7,362.24