Finding the Fourth Proportional to 7,048.75, 10,572.72 and 2,118.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,048.75 : 10,572.72 = 2,118.28 : x
2. Step 2: Convert to fraction form
   7,048.75/10,572.72 = 2,118.28/x
3. Step 3: Cross multiply
   7,048.75x = 10,572.72 × 2,118.28
4. Step 4: Simplify right side
   7,048.75x = 22,395,981.32
5. Step 5: Solve for x
   x = 22,395,981.32/7,048.75
6. Step 6: Final answer
   x = 3,177.30