Finding the Fourth Proportional to 31,044.24, 42,828.48 and 18,938.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,044.24 : 42,828.48 = 18,938.52 : x
2. Step 2: Convert to fraction form
   31,044.24/42,828.48 = 18,938.52/x
3. Step 3: Cross multiply
   31,044.24x = 42,828.48 × 18,938.52
4. Step 4: Simplify right side
   31,044.24x = 811,108,025.05
5. Step 5: Solve for x
   x = 811,108,025.05/31,044.24
6. Step 6: Final answer
   x = 26,127.49