Finding the Fourth Proportional to 5,056.67, 6,978.23 and 2,818.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,056.67 : 6,978.23 = 2,818.69 : x
2. Step 2: Convert to fraction form
   5,056.67/6,978.23 = 2,818.69/x
3. Step 3: Cross multiply
   5,056.67x = 6,978.23 × 2,818.69
4. Step 4: Simplify right side
   5,056.67x = 19,669,439.27
5. Step 5: Solve for x
   x = 19,669,439.27/5,056.67
6. Step 6: Final answer
   x = 3,889.80