Finding the Fourth Proportional to 9,288.22, 12,817.54 and 5,309.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.22 : 12,817.54 = 5,309.10 : x
2. Step 2: Convert to fraction form
   9,288.22/12,817.54 = 5,309.10/x
3. Step 3: Cross multiply
   9,288.22x = 12,817.54 × 5,309.10
4. Step 4: Simplify right side
   9,288.22x = 68,049,601.61
5. Step 5: Solve for x
   x = 68,049,601.61/9,288.22
6. Step 6: Final answer
   x = 7,326.44