Finding the Fourth Proportional to 9,291.16, 12,818.52 and 5,309.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.16 : 12,818.52 = 5,309.44 : x
2. Step 2: Convert to fraction form
   9,291.16/12,818.52 = 5,309.44/x
3. Step 3: Cross multiply
   9,291.16x = 12,818.52 × 5,309.44
4. Step 4: Simplify right side
   9,291.16x = 68,059,162.83
5. Step 5: Solve for x
   x = 68,059,162.83/9,291.16
6. Step 6: Final answer
   x = 7,325.15