Finding the Fourth Proportional to 11,709.12, 17,566.56 and 4,689.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,709.12 : 17,566.56 = 4,689.60 : x
2. Step 2: Convert to fraction form
   11,709.12/17,566.56 = 4,689.60/x
3. Step 3: Cross multiply
   11,709.12x = 17,566.56 × 4,689.60
4. Step 4: Simplify right side
   11,709.12x = 82,380,139.78
5. Step 5: Solve for x
   x = 82,380,139.78/11,709.12
6. Step 6: Final answer
   x = 7,035.55