Finding the Fourth Proportional to 10,938.01, 16,387.20 and 5,019.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.01 : 16,387.20 = 5,019.85 : x
2. Step 2: Convert to fraction form
   10,938.01/16,387.20 = 5,019.85/x
3. Step 3: Cross multiply
   10,938.01x = 16,387.20 × 5,019.85
4. Step 4: Simplify right side
   10,938.01x = 82,261,285.92
5. Step 5: Solve for x
   x = 82,261,285.92/10,938.01
6. Step 6: Final answer
   x = 7,520.68