Finding the Fourth Proportional to 10,763.92, 16,146.72 and 4,189.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,763.92 : 16,146.72 = 4,189.60 : x
2. Step 2: Convert to fraction form
   10,763.92/16,146.72 = 4,189.60/x
3. Step 3: Cross multiply
   10,763.92x = 16,146.72 × 4,189.60
4. Step 4: Simplify right side
   10,763.92x = 67,648,298.11
5. Step 5: Solve for x
   x = 67,648,298.11/10,763.92
6. Step 6: Final answer
   x = 6,284.73