Finding the Fourth Proportional to 7,164.48, 10,731.03 and 5,078.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,164.48 : 10,731.03 = 5,078.15 : x
2. Step 2: Convert to fraction form
   7,164.48/10,731.03 = 5,078.15/x
3. Step 3: Cross multiply
   7,164.48x = 10,731.03 × 5,078.15
4. Step 4: Simplify right side
   7,164.48x = 54,493,783.65
5. Step 5: Solve for x
   x = 54,493,783.65/7,164.48
6. Step 6: Final answer
   x = 7,606.11