Finding the Fourth Proportional to 31,253.88, 43,144.21 and 19,938.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,253.88 : 43,144.21 = 19,938.22 : x
2. Step 2: Convert to fraction form
   31,253.88/43,144.21 = 19,938.22/x
3. Step 3: Cross multiply
   31,253.88x = 43,144.21 × 19,938.22
4. Step 4: Simplify right side
   31,253.88x = 860,218,667.77
5. Step 5: Solve for x
   x = 860,218,667.77/31,253.88
6. Step 6: Final answer
   x = 27,523.58