Finding the Fourth Proportional to 23,141.71, 31,936.77 and 15,188.59

Step by Step Solution

1. Step 1: Write the proportion equation
   23,141.71 : 31,936.77 = 15,188.59 : x
2. Step 2: Convert to fraction form
   23,141.71/31,936.77 = 15,188.59/x
3. Step 3: Cross multiply
   23,141.71x = 31,936.77 × 15,188.59
4. Step 4: Simplify right side
   23,141.71x = 485,074,269.83
5. Step 5: Solve for x
   x = 485,074,269.83/23,141.71
6. Step 6: Final answer
   x = 20,961.04