Finding the Fourth Proportional to 10,870.83, 16,311.72 and 8,103.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.83 : 16,311.72 = 8,103.06 : x
2. Step 2: Convert to fraction form
   10,870.83/16,311.72 = 8,103.06/x
3. Step 3: Cross multiply
   10,870.83x = 16,311.72 × 8,103.06
4. Step 4: Simplify right side
   10,870.83x = 132,174,845.86
5. Step 5: Solve for x
   x = 132,174,845.86/10,870.83
6. Step 6: Final answer
   x = 12,158.67