Finding the Fourth Proportional to 11,687.68, 17,555.12 and 7,016.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,687.68 : 17,555.12 = 7,016.58 : x
2. Step 2: Convert to fraction form
   11,687.68/17,555.12 = 7,016.58/x
3. Step 3: Cross multiply
   11,687.68x = 17,555.12 × 7,016.58
4. Step 4: Simplify right side
   11,687.68x = 123,176,903.89
5. Step 5: Solve for x
   x = 123,176,903.89/11,687.68
6. Step 6: Final answer
   x = 10,539.04