Finding the Fourth Proportional to 10,092.78, 13,928.06 and 5,616.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,092.78 : 13,928.06 = 5,616.56 : x
2. Step 2: Convert to fraction form
   10,092.78/13,928.06 = 5,616.56/x
3. Step 3: Cross multiply
   10,092.78x = 13,928.06 × 5,616.56
4. Step 4: Simplify right side
   10,092.78x = 78,227,833.54
5. Step 5: Solve for x
   x = 78,227,833.54/10,092.78
6. Step 6: Final answer
   x = 7,750.87