Finding the Fourth Proportional to 10,951.28, 16,434.84 and 4,379.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,951.28 : 16,434.84 = 4,379.30 : x
2. Step 2: Convert to fraction form
   10,951.28/16,434.84 = 4,379.30/x
3. Step 3: Cross multiply
   10,951.28x = 16,434.84 × 4,379.30
4. Step 4: Simplify right side
   10,951.28x = 71,973,094.81
5. Step 5: Solve for x
   x = 71,973,094.81/10,951.28
6. Step 6: Final answer
   x = 6,572.12