Finding the Fourth Proportional to 10,878.30, 16,292.34 and 10,697.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,878.30 : 16,292.34 = 10,697.67 : x
2. Step 2: Convert to fraction form
   10,878.30/16,292.34 = 10,697.67/x
3. Step 3: Cross multiply
   10,878.30x = 16,292.34 × 10,697.67
4. Step 4: Simplify right side
   10,878.30x = 174,290,076.85
5. Step 5: Solve for x
   x = 174,290,076.85/10,878.30
6. Step 6: Final answer
   x = 16,021.81