Finding the Fourth Proportional to 31,014.72, 42,802.56 and 18,268.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,014.72 : 42,802.56 = 18,268.56 : x
2. Step 2: Convert to fraction form
   31,014.72/42,802.56 = 18,268.56/x
3. Step 3: Cross multiply
   31,014.72x = 42,802.56 × 18,268.56
4. Step 4: Simplify right side
   31,014.72x = 781,941,135.51
5. Step 5: Solve for x
   x = 781,941,135.51/31,014.72
6. Step 6: Final answer
   x = 25,211.94