Finding the Fourth Proportional to 10,828.48, 16,239.85 and 4,254.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,828.48 : 16,239.85 = 4,254.72 : x
2. Step 2: Convert to fraction form
   10,828.48/16,239.85 = 4,254.72/x
3. Step 3: Cross multiply
   10,828.48x = 16,239.85 × 4,254.72
4. Step 4: Simplify right side
   10,828.48x = 69,096,003.96
5. Step 5: Solve for x
   x = 69,096,003.96/10,828.48
6. Step 6: Final answer
   x = 6,380.95