Finding the Fourth Proportional to 10,868.96, 16,293.72 and 5,318.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,868.96 : 16,293.72 = 5,318.84 : x
2. Step 2: Convert to fraction form
   10,868.96/16,293.72 = 5,318.84/x
3. Step 3: Cross multiply
   10,868.96x = 16,293.72 × 5,318.84
4. Step 4: Simplify right side
   10,868.96x = 86,663,689.68
5. Step 5: Solve for x
   x = 86,663,689.68/10,868.96
6. Step 6: Final answer
   x = 7,973.50