Finding the Fourth Proportional to 7,287.69, 10,928.86 and 2,606.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,287.69 : 10,928.86 = 2,606.43 : x
2. Step 2: Convert to fraction form
   7,287.69/10,928.86 = 2,606.43/x
3. Step 3: Cross multiply
   7,287.69x = 10,928.86 × 2,606.43
4. Step 4: Simplify right side
   7,287.69x = 28,485,343.04
5. Step 5: Solve for x
   x = 28,485,343.04/7,287.69
6. Step 6: Final answer
   x = 3,908.69