Finding the Fourth Proportional to 12,795.80, 17,643.12 and 8,764.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,795.80 : 17,643.12 = 8,764.58 : x
2. Step 2: Convert to fraction form
   12,795.80/17,643.12 = 8,764.58/x
3. Step 3: Cross multiply
   12,795.80x = 17,643.12 × 8,764.58
4. Step 4: Simplify right side
   12,795.80x = 154,634,536.69
5. Step 5: Solve for x
   x = 154,634,536.69/12,795.80
6. Step 6: Final answer
   x = 12,084.79