Finding the Fourth Proportional to 10,976.50, 16,464.93 and 3,186.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,976.50 : 16,464.93 = 3,186.10 : x
2. Step 2: Convert to fraction form
   10,976.50/16,464.93 = 3,186.10/x
3. Step 3: Cross multiply
   10,976.50x = 16,464.93 × 3,186.10
4. Step 4: Simplify right side
   10,976.50x = 52,458,913.47
5. Step 5: Solve for x
   x = 52,458,913.47/10,976.50
6. Step 6: Final answer
   x = 4,779.20