Finding the Fourth Proportional to 12,768.36, 17,620.73 and 7,733.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,768.36 : 17,620.73 = 7,733.51 : x
2. Step 2: Convert to fraction form
   12,768.36/17,620.73 = 7,733.51/x
3. Step 3: Cross multiply
   12,768.36x = 17,620.73 × 7,733.51
4. Step 4: Simplify right side
   12,768.36x = 136,269,964.89
5. Step 5: Solve for x
   x = 136,269,964.89/12,768.36
6. Step 6: Final answer
   x = 10,672.47