Finding the Fourth Proportional to 12,725.56, 17,561.22 and 7,757.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,725.56 : 17,561.22 = 7,757.56 : x
2. Step 2: Convert to fraction form
   12,725.56/17,561.22 = 7,757.56/x
3. Step 3: Cross multiply
   12,725.56x = 17,561.22 × 7,757.56
4. Step 4: Simplify right side
   12,725.56x = 136,232,217.82
5. Step 5: Solve for x
   x = 136,232,217.82/12,725.56
6. Step 6: Final answer
   x = 10,705.40