Finding the Fourth Proportional to 31,218.24, 43,074.78 and 18,465.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,218.24 : 43,074.78 = 18,465.12 : x
2. Step 2: Convert to fraction form
   31,218.24/43,074.78 = 18,465.12/x
3. Step 3: Cross multiply
   31,218.24x = 43,074.78 × 18,465.12
4. Step 4: Simplify right side
   31,218.24x = 795,380,981.67
5. Step 5: Solve for x
   x = 795,380,981.67/31,218.24
6. Step 6: Final answer
   x = 25,478.09