Finding the Fourth Proportional to 10,789.94, 16,186.76 and 4,947.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.94 : 16,186.76 = 4,947.05 : x
2. Step 2: Convert to fraction form
   10,789.94/16,186.76 = 4,947.05/x
3. Step 3: Cross multiply
   10,789.94x = 16,186.76 × 4,947.05
4. Step 4: Simplify right side
   10,789.94x = 80,076,711.06
5. Step 5: Solve for x
   x = 80,076,711.06/10,789.94
6. Step 6: Final answer
   x = 7,421.42