Finding the Fourth Proportional to 30,492.78, 42,081.33 and 18,853.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,492.78 : 42,081.33 = 18,853.53 : x
2. Step 2: Convert to fraction form
   30,492.78/42,081.33 = 18,853.53/x
3. Step 3: Cross multiply
   30,492.78x = 42,081.33 × 18,853.53
4. Step 4: Simplify right side
   30,492.78x = 793,381,617.59
5. Step 5: Solve for x
   x = 793,381,617.59/30,492.78
6. Step 6: Final answer
   x = 26,018.67