Finding the Fourth Proportional to 31,054.68, 42,867.90 and 18,477

Step by Step Solution

1. Step 1: Write the proportion equation
   31,054.68 : 42,867.90 = 18,477 : x
2. Step 2: Convert to fraction form
   31,054.68/42,867.90 = 18,477/x
3. Step 3: Cross multiply
   31,054.68x = 42,867.90 × 18,477
4. Step 4: Simplify right side
   31,054.68x = 792,070,188.30
5. Step 5: Solve for x
   x = 792,070,188.30/31,054.68
6. Step 6: Final answer
   x = 25,505.66