Finding the Fourth Proportional to 3,849.99, 5,777.18 and 3,818.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,849.99 : 5,777.18 = 3,818.67 : x
2. Step 2: Convert to fraction form
   3,849.99/5,777.18 = 3,818.67/x
3. Step 3: Cross multiply
   3,849.99x = 5,777.18 × 3,818.67
4. Step 4: Simplify right side
   3,849.99x = 22,061,143.95
5. Step 5: Solve for x
   x = 22,061,143.95/3,849.99
6. Step 6: Final answer
   x = 5,730.18