Finding the Fourth Proportional to 12,660.77, 17,473.79 and 7,556.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,660.77 : 17,473.79 = 7,556.86 : x
2. Step 2: Convert to fraction form
   12,660.77/17,473.79 = 7,556.86/x
3. Step 3: Cross multiply
   12,660.77x = 17,473.79 × 7,556.86
4. Step 4: Simplify right side
   12,660.77x = 132,047,025.43
5. Step 5: Solve for x
   x = 132,047,025.43/12,660.77
6. Step 6: Final answer
   x = 10,429.62