Finding the Fourth Proportional to 31,082.72, 42,897.25 and 18,982.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,082.72 : 42,897.25 = 18,982.53 : x
2. Step 2: Convert to fraction form
   31,082.72/42,897.25 = 18,982.53/x
3. Step 3: Cross multiply
   31,082.72x = 42,897.25 × 18,982.53
4. Step 4: Simplify right side
   31,082.72x = 814,298,335.04
5. Step 5: Solve for x
   x = 814,298,335.04/31,082.72
6. Step 6: Final answer
   x = 26,197.78