Finding the Fourth Proportional to 7,913.68, 10,916.31 and 5,119.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,913.68 : 10,916.31 = 5,119.18 : x
2. Step 2: Convert to fraction form
   7,913.68/10,916.31 = 5,119.18/x
3. Step 3: Cross multiply
   7,913.68x = 10,916.31 × 5,119.18
4. Step 4: Simplify right side
   7,913.68x = 55,882,555.83
5. Step 5: Solve for x
   x = 55,882,555.83/7,913.68
6. Step 6: Final answer
   x = 7,061.51