Finding the Fourth Proportional to 11,760.48, 17,642.64 and 3,966.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,760.48 : 17,642.64 = 3,966.72 : x
2. Step 2: Convert to fraction form
   11,760.48/17,642.64 = 3,966.72/x
3. Step 3: Cross multiply
   11,760.48x = 17,642.64 × 3,966.72
4. Step 4: Simplify right side
   11,760.48x = 69,983,412.94
5. Step 5: Solve for x
   x = 69,983,412.94/11,760.48
6. Step 6: Final answer
   x = 5,950.73