Finding the Fourth Proportional to 7,280.31, 10,923.72 and 3,816.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,280.31 : 10,923.72 = 3,816.75 : x
2. Step 2: Convert to fraction form
   7,280.31/10,923.72 = 3,816.75/x
3. Step 3: Cross multiply
   7,280.31x = 10,923.72 × 3,816.75
4. Step 4: Simplify right side
   7,280.31x = 41,693,108.31
5. Step 5: Solve for x
   x = 41,693,108.31/7,280.31
6. Step 6: Final answer
   x = 5,726.83