Finding the Fourth Proportional to 9,321.68, 12,861.02 and 5,287.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.68 : 12,861.02 = 5,287.84 : x
2. Step 2: Convert to fraction form
   9,321.68/12,861.02 = 5,287.84/x
3. Step 3: Cross multiply
   9,321.68x = 12,861.02 × 5,287.84
4. Step 4: Simplify right side
   9,321.68x = 68,007,061.37
5. Step 5: Solve for x
   x = 68,007,061.37/9,321.68
6. Step 6: Final answer
   x = 7,295.58