Finding the Fourth Proportional to 9,288.06, 12,818.62 and 5,309.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.06 : 12,818.62 = 5,309.34 : x
2. Step 2: Convert to fraction form
   9,288.06/12,818.62 = 5,309.34/x
3. Step 3: Cross multiply
   9,288.06x = 12,818.62 × 5,309.34
4. Step 4: Simplify right side
   9,288.06x = 68,058,411.91
5. Step 5: Solve for x
   x = 68,058,411.91/9,288.06
6. Step 6: Final answer
   x = 7,327.52