Finding the Fourth Proportional to 10,998.15, 16,491.15 and 4,757.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,998.15 : 16,491.15 = 4,757.10 : x
2. Step 2: Convert to fraction form
   10,998.15/16,491.15 = 4,757.10/x
3. Step 3: Cross multiply
   10,998.15x = 16,491.15 × 4,757.10
4. Step 4: Simplify right side
   10,998.15x = 78,450,049.67
5. Step 5: Solve for x
   x = 78,450,049.67/10,998.15
6. Step 6: Final answer
   x = 7,133.02