Finding the Fourth Proportional to 9,288.36, 12,818.81 and 5,308.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.36 : 12,818.81 = 5,308.69 : x
2. Step 2: Convert to fraction form
   9,288.36/12,818.81 = 5,308.69/x
3. Step 3: Cross multiply
   9,288.36x = 12,818.81 × 5,308.69
4. Step 4: Simplify right side
   9,288.36x = 68,051,088.46
5. Step 5: Solve for x
   x = 68,051,088.46/9,288.36
6. Step 6: Final answer
   x = 7,326.49