Finding the Fourth Proportional to 23,018.23, 31,767.87 and 12,947.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,018.23 : 31,767.87 = 12,947.05 : x
2. Step 2: Convert to fraction form
   23,018.23/31,767.87 = 12,947.05/x
3. Step 3: Cross multiply
   23,018.23x = 31,767.87 × 12,947.05
4. Step 4: Simplify right side
   23,018.23x = 411,300,201.28
5. Step 5: Solve for x
   x = 411,300,201.28/23,018.23
6. Step 6: Final answer
   x = 17,868.45