Finding the Fourth Proportional to 10,889.94, 16,323.88 and 7,380.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,889.94 : 16,323.88 = 7,380.31 : x
2. Step 2: Convert to fraction form
   10,889.94/16,323.88 = 7,380.31/x
3. Step 3: Cross multiply
   10,889.94x = 16,323.88 × 7,380.31
4. Step 4: Simplify right side
   10,889.94x = 120,475,213.18
5. Step 5: Solve for x
   x = 120,475,213.18/10,889.94
6. Step 6: Final answer
   x = 11,062.98