Finding the Fourth Proportional to 9,912.78, 13,678.69 and 5,933.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,912.78 : 13,678.69 = 5,933.81 : x
2. Step 2: Convert to fraction form
   9,912.78/13,678.69 = 5,933.81/x
3. Step 3: Cross multiply
   9,912.78x = 13,678.69 × 5,933.81
4. Step 4: Simplify right side
   9,912.78x = 81,166,747.51
5. Step 5: Solve for x
   x = 81,166,747.51/9,912.78
6. Step 6: Final answer
   x = 8,188.09