Finding the Fourth Proportional to 9,196.16, 12,687.84 and 5,216.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,196.16 : 12,687.84 = 5,216.96 : x
2. Step 2: Convert to fraction form
   9,196.16/12,687.84 = 5,216.96/x
3. Step 3: Cross multiply
   9,196.16x = 12,687.84 × 5,216.96
4. Step 4: Simplify right side
   9,196.16x = 66,191,953.77
5. Step 5: Solve for x
   x = 66,191,953.77/9,196.16
6. Step 6: Final answer
   x = 7,197.78