Finding the Fourth Proportional to 10,518.24, 15,776.82 and 3,122.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,518.24 : 15,776.82 = 3,122.76 : x
2. Step 2: Convert to fraction form
   10,518.24/15,776.82 = 3,122.76/x
3. Step 3: Cross multiply
   10,518.24x = 15,776.82 × 3,122.76
4. Step 4: Simplify right side
   10,518.24x = 49,267,222.42
5. Step 5: Solve for x
   x = 49,267,222.42/10,518.24
6. Step 6: Final answer
   x = 4,683.98