Finding the Fourth Proportional to 9,196.51, 12,690.31 and 5,162.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,196.51 : 12,690.31 = 5,162.42 : x
2. Step 2: Convert to fraction form
   9,196.51/12,690.31 = 5,162.42/x
3. Step 3: Cross multiply
   9,196.51x = 12,690.31 × 5,162.42
4. Step 4: Simplify right side
   9,196.51x = 65,512,633.79
5. Step 5: Solve for x
   x = 65,512,633.79/9,196.51
6. Step 6: Final answer
   x = 7,123.64