Finding the Fourth Proportional to 31,788.23, 43,869.83 and 18,360.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,788.23 : 43,869.83 = 18,360.05 : x
2. Step 2: Convert to fraction form
   31,788.23/43,869.83 = 18,360.05/x
3. Step 3: Cross multiply
   31,788.23x = 43,869.83 × 18,360.05
4. Step 4: Simplify right side
   31,788.23x = 805,451,961.14
5. Step 5: Solve for x
   x = 805,451,961.14/31,788.23
6. Step 6: Final answer
   x = 25,338.06