Finding the Fourth Proportional to 23,141.12, 31,939.72 and 15,084.84

Step by Step Solution

1. Step 1: Write the proportion equation
   23,141.12 : 31,939.72 = 15,084.84 : x
2. Step 2: Convert to fraction form
   23,141.12/31,939.72 = 15,084.84/x
3. Step 3: Cross multiply
   23,141.12x = 31,939.72 × 15,084.84
4. Step 4: Simplify right side
   23,141.12x = 481,805,565.84
5. Step 5: Solve for x
   x = 481,805,565.84/23,141.12
6. Step 6: Final answer
   x = 20,820.32