Finding the Fourth Proportional to 10,877.30, 16,311.39 and 3,479.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.30 : 16,311.39 = 3,479.78 : x
2. Step 2: Convert to fraction form
   10,877.30/16,311.39 = 3,479.78/x
3. Step 3: Cross multiply
   10,877.30x = 16,311.39 × 3,479.78
4. Step 4: Simplify right side
   10,877.30x = 56,760,048.69
5. Step 5: Solve for x
   x = 56,760,048.69/10,877.30
6. Step 6: Final answer
   x = 5,218.21