Finding the Fourth Proportional to 15,910.16, 21,953.37 and 9,196.41

Step by Step Solution

1. Step 1: Write the proportion equation
   15,910.16 : 21,953.37 = 9,196.41 : x
2. Step 2: Convert to fraction form
   15,910.16/21,953.37 = 9,196.41/x
3. Step 3: Cross multiply
   15,910.16x = 21,953.37 × 9,196.41
4. Step 4: Simplify right side
   15,910.16x = 201,892,191.40
5. Step 5: Solve for x
   x = 201,892,191.40/15,910.16
6. Step 6: Final answer
   x = 12,689.52