Finding the Fourth Proportional to 12,314.66, 16,988.42 and 8,956

Step by Step Solution

1. Step 1: Write the proportion equation
   12,314.66 : 16,988.42 = 8,956 : x
2. Step 2: Convert to fraction form
   12,314.66/16,988.42 = 8,956/x
3. Step 3: Cross multiply
   12,314.66x = 16,988.42 × 8,956
4. Step 4: Simplify right side
   12,314.66x = 152,148,289.52
5. Step 5: Solve for x
   x = 152,148,289.52/12,314.66
6. Step 6: Final answer
   x = 12,355.05