Finding the Fourth Proportional to 9,352.56, 12,906.78 and 5,320.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,352.56 : 12,906.78 = 5,320.05 : x
2. Step 2: Convert to fraction form
   9,352.56/12,906.78 = 5,320.05/x
3. Step 3: Cross multiply
   9,352.56x = 12,906.78 × 5,320.05
4. Step 4: Simplify right side
   9,352.56x = 68,664,714.94
5. Step 5: Solve for x
   x = 68,664,714.94/9,352.56
6. Step 6: Final answer
   x = 7,341.81