Finding the Fourth Proportional to 12,300.77, 18,452.48 and 4,509.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.77 : 18,452.48 = 4,509.57 : x
2. Step 2: Convert to fraction form
   12,300.77/18,452.48 = 4,509.57/x
3. Step 3: Cross multiply
   12,300.77x = 18,452.48 × 4,509.57
4. Step 4: Simplify right side
   12,300.77x = 83,212,727.69
5. Step 5: Solve for x
   x = 83,212,727.69/12,300.77
6. Step 6: Final answer
   x = 6,764.84