Finding the Fourth Proportional to 12,307.27, 16,978.12 and 8,056.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,307.27 : 16,978.12 = 8,056.46 : x
2. Step 2: Convert to fraction form
   12,307.27/16,978.12 = 8,056.46/x
3. Step 3: Cross multiply
   12,307.27x = 16,978.12 × 8,056.46
4. Step 4: Simplify right side
   12,307.27x = 136,783,544.66
5. Step 5: Solve for x
   x = 136,783,544.66/12,307.27
6. Step 6: Final answer
   x = 11,114.04