Finding the Fourth Proportional to 12,359.45, 18,530.37 and 5,782.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,359.45 : 18,530.37 = 5,782.05 : x
2. Step 2: Convert to fraction form
   12,359.45/18,530.37 = 5,782.05/x
3. Step 3: Cross multiply
   12,359.45x = 18,530.37 × 5,782.05
4. Step 4: Simplify right side
   12,359.45x = 107,143,525.86
5. Step 5: Solve for x
   x = 107,143,525.86/12,359.45
6. Step 6: Final answer
   x = 8,668.96