Finding the Fourth Proportional to 11,996.56, 16,560.56 and 7,749.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,996.56 : 16,560.56 = 7,749.69 : x
2. Step 2: Convert to fraction form
   11,996.56/16,560.56 = 7,749.69/x
3. Step 3: Cross multiply
   11,996.56x = 16,560.56 × 7,749.69
4. Step 4: Simplify right side
   11,996.56x = 128,339,188.28
5. Step 5: Solve for x
   x = 128,339,188.28/11,996.56
6. Step 6: Final answer
   x = 10,698.00