Finding the Fourth Proportional to 31,022.64, 42,802.20 and 19,087.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,022.64 : 42,802.20 = 19,087.92 : x
2. Step 2: Convert to fraction form
   31,022.64/42,802.20 = 19,087.92/x
3. Step 3: Cross multiply
   31,022.64x = 42,802.20 × 19,087.92
4. Step 4: Simplify right side
   31,022.64x = 817,004,969.42
5. Step 5: Solve for x
   x = 817,004,969.42/31,022.64
6. Step 6: Final answer
   x = 26,335.77