Finding the Fourth Proportional to 12,757.74, 17,606.06 and 7,722.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.74 : 17,606.06 = 7,722.87 : x
2. Step 2: Convert to fraction form
   12,757.74/17,606.06 = 7,722.87/x
3. Step 3: Cross multiply
   12,757.74x = 17,606.06 × 7,722.87
4. Step 4: Simplify right side
   12,757.74x = 135,969,312.59
5. Step 5: Solve for x
   x = 135,969,312.59/12,757.74
6. Step 6: Final answer
   x = 10,657.79