Finding the Fourth Proportional to 12,613.59, 17,367.62 and 10,818.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.59 : 17,367.62 = 10,818.63 : x
2. Step 2: Convert to fraction form
   12,613.59/17,367.62 = 10,818.63/x
3. Step 3: Cross multiply
   12,613.59x = 17,367.62 × 10,818.63
4. Step 4: Simplify right side
   12,613.59x = 187,893,800.67
5. Step 5: Solve for x
   x = 187,893,800.67/12,613.59
6. Step 6: Final answer
   x = 14,896.14