Finding the Fourth Proportional to 12,922.56, 17,837.28 and 8,736.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922.56 : 17,837.28 = 8,736.48 : x
2. Step 2: Convert to fraction form
   12,922.56/17,837.28 = 8,736.48/x
3. Step 3: Cross multiply
   12,922.56x = 17,837.28 × 8,736.48
4. Step 4: Simplify right side
   12,922.56x = 155,835,039.97
5. Step 5: Solve for x
   x = 155,835,039.97/12,922.56
6. Step 6: Final answer
   x = 12,059.15