Finding the Fourth Proportional to 9,285.22, 12,811.76 and 5,507.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,285.22 : 12,811.76 = 5,507.68 : x
2. Step 2: Convert to fraction form
   9,285.22/12,811.76 = 5,507.68/x
3. Step 3: Cross multiply
   9,285.22x = 12,811.76 × 5,507.68
4. Step 4: Simplify right side
   9,285.22x = 70,563,074.32
5. Step 5: Solve for x
   x = 70,563,074.32/9,285.22
6. Step 6: Final answer
   x = 7,599.50