Finding the Fourth Proportional to 31,088.27, 42,891.27 and 18,984.33

Step by Step Solution

1. Step 1: Write the proportion equation
   31,088.27 : 42,891.27 = 18,984.33 : x
2. Step 2: Convert to fraction form
   31,088.27/42,891.27 = 18,984.33/x
3. Step 3: Cross multiply
   31,088.27x = 42,891.27 × 18,984.33
4. Step 4: Simplify right side
   31,088.27x = 814,262,023.80
5. Step 5: Solve for x
   x = 814,262,023.80/31,088.27
6. Step 6: Final answer
   x = 26,191.94