Finding the Fourth Proportional to 12,729.77, 19,086.99 and 5,708.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,729.77 : 19,086.99 = 5,708.52 : x
2. Step 2: Convert to fraction form
   12,729.77/19,086.99 = 5,708.52/x
3. Step 3: Cross multiply
   12,729.77x = 19,086.99 × 5,708.52
4. Step 4: Simplify right side
   12,729.77x = 108,958,464.15
5. Step 5: Solve for x
   x = 108,958,464.15/12,729.77
6. Step 6: Final answer
   x = 8,559.34