Finding the Fourth Proportional to 10,638.24, 14,678.52 and 6,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,638.24 : 14,678.52 = 6,162.72 : x
2. Step 2: Convert to fraction form
   10,638.24/14,678.52 = 6,162.72/x
3. Step 3: Cross multiply
   10,638.24x = 14,678.52 × 6,162.72
4. Step 4: Simplify right side
   10,638.24x = 90,459,608.77
5. Step 5: Solve for x
   x = 90,459,608.77/10,638.24
6. Step 6: Final answer
   x = 8,503.25