Finding the Fourth Proportional to 9,281.87, 12,811.33 and 5,305.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,281.87 : 12,811.33 = 5,305.33 : x
2. Step 2: Convert to fraction form
   9,281.87/12,811.33 = 5,305.33/x
3. Step 3: Cross multiply
   9,281.87x = 12,811.33 × 5,305.33
4. Step 4: Simplify right side
   9,281.87x = 67,968,333.39
5. Step 5: Solve for x
   x = 67,968,333.39/9,281.87
6. Step 6: Final answer
   x = 7,322.70