Finding the Fourth Proportional to 10,764.79, 16,137.61 and 4,189.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,764.79 : 16,137.61 = 4,189.43 : x
2. Step 2: Convert to fraction form
   10,764.79/16,137.61 = 4,189.43/x
3. Step 3: Cross multiply
   10,764.79x = 16,137.61 × 4,189.43
4. Step 4: Simplify right side
   10,764.79x = 67,607,366.52
5. Step 5: Solve for x
   x = 67,607,366.52/10,764.79
6. Step 6: Final answer
   x = 6,280.42