Finding the Fourth Proportional to 10,769.55, 16,156.61 and 5,435.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,769.55 : 16,156.61 = 5,435.78 : x
2. Step 2: Convert to fraction form
   10,769.55/16,156.61 = 5,435.78/x
3. Step 3: Cross multiply
   10,769.55x = 16,156.61 × 5,435.78
4. Step 4: Simplify right side
   10,769.55x = 87,823,669.54
5. Step 5: Solve for x
   x = 87,823,669.54/10,769.55
6. Step 6: Final answer
   x = 8,154.81