Finding the Fourth Proportional to 7,961.94, 10,990.50 and 5,308.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,961.94 : 10,990.50 = 5,308.38 : x
2. Step 2: Convert to fraction form
   7,961.94/10,990.50 = 5,308.38/x
3. Step 3: Cross multiply
   7,961.94x = 10,990.50 × 5,308.38
4. Step 4: Simplify right side
   7,961.94x = 58,341,750.39
5. Step 5: Solve for x
   x = 58,341,750.39/7,961.94
6. Step 6: Final answer
   x = 7,327.58