Finding the Fourth Proportional to 10,819.56, 16,133.82 and 10,434.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,819.56 : 16,133.82 = 10,434.08 : x
2. Step 2: Convert to fraction form
   10,819.56/16,133.82 = 10,434.08/x
3. Step 3: Cross multiply
   10,819.56x = 16,133.82 × 10,434.08
4. Step 4: Simplify right side
   10,819.56x = 168,341,568.59
5. Step 5: Solve for x
   x = 168,341,568.59/10,819.56
6. Step 6: Final answer
   x = 15,559.00