Finding the Fourth Proportional to 5,008.72, 6,912.56 and 2,884.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,008.72 : 6,912.56 = 2,884.34 : x
2. Step 2: Convert to fraction form
   5,008.72/6,912.56 = 2,884.34/x
3. Step 3: Cross multiply
   5,008.72x = 6,912.56 × 2,884.34
4. Step 4: Simplify right side
   5,008.72x = 19,938,173.31
5. Step 5: Solve for x
   x = 19,938,173.31/5,008.72
6. Step 6: Final answer
   x = 3,980.69