Finding the Fourth Proportional to 31,557.89, 43,548.68 and 19,618.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,557.89 : 43,548.68 = 19,618.49 : x
2. Step 2: Convert to fraction form
   31,557.89/43,548.68 = 19,618.49/x
3. Step 3: Cross multiply
   31,557.89x = 43,548.68 × 19,618.49
4. Step 4: Simplify right side
   31,557.89x = 854,359,174.40
5. Step 5: Solve for x
   x = 854,359,174.40/31,557.89
6. Step 6: Final answer
   x = 27,072.76