Finding the Fourth Proportional to 12,614.46, 17,392.52 and 7,890.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,614.46 : 17,392.52 = 7,890.54 : x
2. Step 2: Convert to fraction form
   12,614.46/17,392.52 = 7,890.54/x
3. Step 3: Cross multiply
   12,614.46x = 17,392.52 × 7,890.54
4. Step 4: Simplify right side
   12,614.46x = 137,236,374.76
5. Step 5: Solve for x
   x = 137,236,374.76/12,614.46
6. Step 6: Final answer
   x = 10,879.29