Finding the Fourth Proportional to 7,719.18, 11,568.69 and 3,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,719.18 : 11,568.69 = 3,105.42 : x
2. Step 2: Convert to fraction form
   7,719.18/11,568.69 = 3,105.42/x
3. Step 3: Cross multiply
   7,719.18x = 11,568.69 × 3,105.42
4. Step 4: Simplify right side
   7,719.18x = 35,925,641.30
5. Step 5: Solve for x
   x = 35,925,641.30/7,719.18
6. Step 6: Final answer
   x = 4,654.07