Finding the Fourth Proportional to 10,905.59, 16,336.97 and 7,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,905.59 : 16,336.97 = 7,196.50 : x
2. Step 2: Convert to fraction form
   10,905.59/16,336.97 = 7,196.50/x
3. Step 3: Cross multiply
   10,905.59x = 16,336.97 × 7,196.50
4. Step 4: Simplify right side
   10,905.59x = 117,568,903.89
5. Step 5: Solve for x
   x = 117,568,903.89/10,905.59
6. Step 6: Final answer
   x = 10,780.61