Finding the Fourth Proportional to 12,895.88, 17,786.24 and 8,645.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,895.88 : 17,786.24 = 8,645.54 : x
2. Step 2: Convert to fraction form
   12,895.88/17,786.24 = 8,645.54/x
3. Step 3: Cross multiply
   12,895.88x = 17,786.24 × 8,645.54
4. Step 4: Simplify right side
   12,895.88x = 153,771,649.37
5. Step 5: Solve for x
   x = 153,771,649.37/12,895.88
6. Step 6: Final answer
   x = 11,924.09