Finding the Fourth Proportional to 7,288.98, 10,938.78 and 2,907.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,288.98 : 10,938.78 = 2,907.69 : x
2. Step 2: Convert to fraction form
   7,288.98/10,938.78 = 2,907.69/x
3. Step 3: Cross multiply
   7,288.98x = 10,938.78 × 2,907.69
4. Step 4: Simplify right side
   7,288.98x = 31,806,581.22
5. Step 5: Solve for x
   x = 31,806,581.22/7,288.98
6. Step 6: Final answer
   x = 4,363.65