Finding the Fourth Proportional to 10,789.70, 16,154.42 and 5,513.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.70 : 16,154.42 = 5,513.36 : x
2. Step 2: Convert to fraction form
   10,789.70/16,154.42 = 5,513.36/x
3. Step 3: Cross multiply
   10,789.70x = 16,154.42 × 5,513.36
4. Step 4: Simplify right side
   10,789.70x = 89,065,133.05
5. Step 5: Solve for x
   x = 89,065,133.05/10,789.70
6. Step 6: Final answer
   x = 8,254.64