Finding the Fourth Proportional to 12,443.98, 18,653.67 and 5,782.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.98 : 18,653.67 = 5,782.51 : x
2. Step 2: Convert to fraction form
   12,443.98/18,653.67 = 5,782.51/x
3. Step 3: Cross multiply
   12,443.98x = 18,653.67 × 5,782.51
4. Step 4: Simplify right side
   12,443.98x = 107,865,092.83
5. Step 5: Solve for x
   x = 107,865,092.83/12,443.98
6. Step 6: Final answer
   x = 8,668.05