Finding the Fourth Proportional to 31,940.32, 44,072.16 and 18,513.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,940.32 : 44,072.16 = 18,513.28 : x
2. Step 2: Convert to fraction form
   31,940.32/44,072.16 = 18,513.28/x
3. Step 3: Cross multiply
   31,940.32x = 44,072.16 × 18,513.28
4. Step 4: Simplify right side
   31,940.32x = 815,920,238.28
5. Step 5: Solve for x
   x = 815,920,238.28/31,940.32
6. Step 6: Final answer
   x = 25,545.15