Finding the Fourth Proportional to 10,890, 15,028.56 and 5,922

Step by Step Solution

1. Step 1: Write the proportion equation
   10,890 : 15,028.56 = 5,922 : x
2. Step 2: Convert to fraction form
   10,890/15,028.56 = 5,922/x
3. Step 3: Cross multiply
   10,890x = 15,028.56 × 5,922
4. Step 4: Simplify right side
   10,890x = 88,999,132.32
5. Step 5: Solve for x
   x = 88,999,132.32/10,890
6. Step 6: Final answer
   x = 8,172.56