Finding the Fourth Proportional to 5,118.51, 7,064.17 and 2,880.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,118.51 : 7,064.17 = 2,880.48 : x
2. Step 2: Convert to fraction form
   5,118.51/7,064.17 = 2,880.48/x
3. Step 3: Cross multiply
   5,118.51x = 7,064.17 × 2,880.48
4. Step 4: Simplify right side
   5,118.51x = 20,348,200.40
5. Step 5: Solve for x
   x = 20,348,200.40/5,118.51
6. Step 6: Final answer
   x = 3,975.41