Finding the Fourth Proportional to 7,300.18, 10,945.28 and 2,620.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,300.18 : 10,945.28 = 2,620.09 : x
2. Step 2: Convert to fraction form
   7,300.18/10,945.28 = 2,620.09/x
3. Step 3: Cross multiply
   7,300.18x = 10,945.28 × 2,620.09
4. Step 4: Simplify right side
   7,300.18x = 28,677,550.85
5. Step 5: Solve for x
   x = 28,677,550.85/7,300.18
6. Step 6: Final answer
   x = 3,928.33