Finding the Fourth Proportional to 12,727.31, 17,563.64 and 7,759.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,727.31 : 17,563.64 = 7,759.31 : x
2. Step 2: Convert to fraction form
   12,727.31/17,563.64 = 7,759.31/x
3. Step 3: Cross multiply
   12,727.31x = 17,563.64 × 7,759.31
4. Step 4: Simplify right side
   12,727.31x = 136,281,688.69
5. Step 5: Solve for x
   x = 136,281,688.69/12,727.31
6. Step 6: Final answer
   x = 10,707.82