Finding the Fourth Proportional to 27,870.12, 38,478.78 and 17,271

Step by Step Solution

1. Step 1: Write the proportion equation
   27,870.12 : 38,478.78 = 17,271 : x
2. Step 2: Convert to fraction form
   27,870.12/38,478.78 = 17,271/x
3. Step 3: Cross multiply
   27,870.12x = 38,478.78 × 17,271
4. Step 4: Simplify right side
   27,870.12x = 664,567,009.38
5. Step 5: Solve for x
   x = 664,567,009.38/27,870.12
6. Step 6: Final answer
   x = 23,845.14