Finding the Fourth Proportional to 7,908.50, 10,913.92 and 5,118.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,908.50 : 10,913.92 = 5,118.86 : x
2. Step 2: Convert to fraction form
   7,908.50/10,913.92 = 5,118.86/x
3. Step 3: Cross multiply
   7,908.50x = 10,913.92 × 5,118.86
4. Step 4: Simplify right side
   7,908.50x = 55,866,828.53
5. Step 5: Solve for x
   x = 55,866,828.53/7,908.50
6. Step 6: Final answer
   x = 7,064.15