Finding the Fourth Proportional to 9,288.96, 12,816.29 and 5,508.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.96 : 12,816.29 = 5,508.99 : x
2. Step 2: Convert to fraction form
   9,288.96/12,816.29 = 5,508.99/x
3. Step 3: Cross multiply
   9,288.96x = 12,816.29 × 5,508.99
4. Step 4: Simplify right side
   9,288.96x = 70,604,813.45
5. Step 5: Solve for x
   x = 70,604,813.45/9,288.96
6. Step 6: Final answer
   x = 7,600.94