Finding the Fourth Proportional to 31,147.04, 42,974.88 and 18,562.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,147.04 : 42,974.88 = 18,562.88 : x
2. Step 2: Convert to fraction form
   31,147.04/42,974.88 = 18,562.88/x
3. Step 3: Cross multiply
   31,147.04x = 42,974.88 × 18,562.88
4. Step 4: Simplify right side
   31,147.04x = 797,737,540.45
5. Step 5: Solve for x
   x = 797,737,540.45/31,147.04
6. Step 6: Final answer
   x = 25,611.99