Finding the Fourth Proportional to 31,091.88, 42,894.63 and 19,134.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.88 : 42,894.63 = 19,134.46 : x
2. Step 2: Convert to fraction form
   31,091.88/42,894.63 = 19,134.46/x
3. Step 3: Cross multiply
   31,091.88x = 42,894.63 × 19,134.46
4. Step 4: Simplify right side
   31,091.88x = 820,765,474.71
5. Step 5: Solve for x
   x = 820,765,474.71/31,091.88
6. Step 6: Final answer
   x = 26,398.07