Finding the Fourth Proportional to 14,159.39, 19,540.46 and 7,786.47

Step by Step Solution

1. Step 1: Write the proportion equation
   14,159.39 : 19,540.46 = 7,786.47 : x
2. Step 2: Convert to fraction form
   14,159.39/19,540.46 = 7,786.47/x
3. Step 3: Cross multiply
   14,159.39x = 19,540.46 × 7,786.47
4. Step 4: Simplify right side
   14,159.39x = 152,151,107.87
5. Step 5: Solve for x
   x = 152,151,107.87/14,159.39
6. Step 6: Final answer
   x = 10,745.60