Finding the Fourth Proportional to 31,434.67, 43,372.22 and 19,945.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,434.67 : 43,372.22 = 19,945.38 : x
2. Step 2: Convert to fraction form
   31,434.67/43,372.22 = 19,945.38/x
3. Step 3: Cross multiply
   31,434.67x = 43,372.22 × 19,945.38
4. Step 4: Simplify right side
   31,434.67x = 865,075,409.34
5. Step 5: Solve for x
   x = 865,075,409.34/31,434.67
6. Step 6: Final answer
   x = 27,519.79