Finding the Fourth Proportional to 13,072.59, 19,606.82 and 10,865.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,072.59 : 19,606.82 = 10,865.59 : x
2. Step 2: Convert to fraction form
   13,072.59/19,606.82 = 10,865.59/x
3. Step 3: Cross multiply
   13,072.59x = 19,606.82 × 10,865.59
4. Step 4: Simplify right side
   13,072.59x = 213,039,667.32
5. Step 5: Solve for x
   x = 213,039,667.32/13,072.59
6. Step 6: Final answer
   x = 16,296.67