Finding the Fourth Proportional to 10,396.57, 15,585.53 and 3,818.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,396.57 : 15,585.53 = 3,818.15 : x
2. Step 2: Convert to fraction form
   10,396.57/15,585.53 = 3,818.15/x
3. Step 3: Cross multiply
   10,396.57x = 15,585.53 × 3,818.15
4. Step 4: Simplify right side
   10,396.57x = 59,507,961.94
5. Step 5: Solve for x
   x = 59,507,961.94/10,396.57
6. Step 6: Final answer
   x = 5,723.81