Finding the Fourth Proportional to 12,913.56, 17,789.22 and 8,927.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913.56 : 17,789.22 = 8,927.82 : x
2. Step 2: Convert to fraction form
   12,913.56/17,789.22 = 8,927.82/x
3. Step 3: Cross multiply
   12,913.56x = 17,789.22 × 8,927.82
4. Step 4: Simplify right side
   12,913.56x = 158,818,954.10
5. Step 5: Solve for x
   x = 158,818,954.10/12,913.56
6. Step 6: Final answer
   x = 12,298.62