Finding the Fourth Proportional to 31,788.56, 43,870.20 and 18,362.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,788.56 : 43,870.20 = 18,362.28 : x
2. Step 2: Convert to fraction form
   31,788.56/43,870.20 = 18,362.28/x
3. Step 3: Cross multiply
   31,788.56x = 43,870.20 × 18,362.28
4. Step 4: Simplify right side
   31,788.56x = 805,556,896.06
5. Step 5: Solve for x
   x = 805,556,896.06/31,788.56
6. Step 6: Final answer
   x = 25,341.09