Finding the Fourth Proportional to 12,818.42, 17,675.76 and 10,124.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,818.42 : 17,675.76 = 10,124.90 : x
2. Step 2: Convert to fraction form
   12,818.42/17,675.76 = 10,124.90/x
3. Step 3: Cross multiply
   12,818.42x = 17,675.76 × 10,124.90
4. Step 4: Simplify right side
   12,818.42x = 178,965,302.42
5. Step 5: Solve for x
   x = 178,965,302.42/12,818.42
6. Step 6: Final answer
   x = 13,961.57