Finding the Fourth Proportional to 13,433.16, 18,536.67 and 7,768.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,433.16 : 18,536.67 = 7,768.28 : x
2. Step 2: Convert to fraction form
   13,433.16/18,536.67 = 7,768.28/x
3. Step 3: Cross multiply
   13,433.16x = 18,536.67 × 7,768.28
4. Step 4: Simplify right side
   13,433.16x = 143,998,042.83
5. Step 5: Solve for x
   x = 143,998,042.83/13,433.16
6. Step 6: Final answer
   x = 10,719.60