Finding the Fourth Proportional to 11,790.56, 16,271.52 and 6,485.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,790.56 : 16,271.52 = 6,485.28 : x
2. Step 2: Convert to fraction form
   11,790.56/16,271.52 = 6,485.28/x
3. Step 3: Cross multiply
   11,790.56x = 16,271.52 × 6,485.28
4. Step 4: Simplify right side
   11,790.56x = 105,525,363.23
5. Step 5: Solve for x
   x = 105,525,363.23/11,790.56
6. Step 6: Final answer
   x = 8,949.99