Finding the Fourth Proportional to 11,105.68, 15,299.82 and 7,742.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.68 : 15,299.82 = 7,742.38 : x
2. Step 2: Convert to fraction form
   11,105.68/15,299.82 = 7,742.38/x
3. Step 3: Cross multiply
   11,105.68x = 15,299.82 × 7,742.38
4. Step 4: Simplify right side
   11,105.68x = 118,457,020.37
5. Step 5: Solve for x
   x = 118,457,020.37/11,105.68
6. Step 6: Final answer
   x = 10,666.35