Finding the Fourth Proportional to 12,912.83, 17,805.46 and 8,927.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912.83 : 17,805.46 = 8,927.02 : x
2. Step 2: Convert to fraction form
   12,912.83/17,805.46 = 8,927.02/x
3. Step 3: Cross multiply
   12,912.83x = 17,805.46 × 8,927.02
4. Step 4: Simplify right side
   12,912.83x = 158,949,697.53
5. Step 5: Solve for x
   x = 158,949,697.53/12,912.83
6. Step 6: Final answer
   x = 12,309.44