Finding the Fourth Proportional to 12,613.15, 17,422.59 and 10,231.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.15 : 17,422.59 = 10,231.98 : x
2. Step 2: Convert to fraction form
   12,613.15/17,422.59 = 10,231.98/x
3. Step 3: Cross multiply
   12,613.15x = 17,422.59 × 10,231.98
4. Step 4: Simplify right side
   12,613.15x = 178,267,592.43
5. Step 5: Solve for x
   x = 178,267,592.43/12,613.15
6. Step 6: Final answer
   x = 14,133.47