Finding the Fourth Proportional to 9,321.49, 12,864.18 and 5,343.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.49 : 12,864.18 = 5,343.27 : x
2. Step 2: Convert to fraction form
   9,321.49/12,864.18 = 5,343.27/x
3. Step 3: Cross multiply
   9,321.49x = 12,864.18 × 5,343.27
4. Step 4: Simplify right side
   9,321.49x = 68,736,787.07
5. Step 5: Solve for x
   x = 68,736,787.07/9,321.49
6. Step 6: Final answer
   x = 7,374.01