Finding the Fourth Proportional to 10,774.47, 16,145.88 and 5,430.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,774.47 : 16,145.88 = 5,430.33 : x
2. Step 2: Convert to fraction form
   10,774.47/16,145.88 = 5,430.33/x
3. Step 3: Cross multiply
   10,774.47x = 16,145.88 × 5,430.33
4. Step 4: Simplify right side
   10,774.47x = 87,677,456.54
5. Step 5: Solve for x
   x = 87,677,456.54/10,774.47
6. Step 6: Final answer
   x = 8,137.52