Finding the Fourth Proportional to 30,492.72, 42,073.44 and 17,912.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,492.72 : 42,073.44 = 17,912.88 : x
2. Step 2: Convert to fraction form
   30,492.72/42,073.44 = 17,912.88/x
3. Step 3: Cross multiply
   30,492.72x = 42,073.44 × 17,912.88
4. Step 4: Simplify right side
   30,492.72x = 753,656,481.91
5. Step 5: Solve for x
   x = 753,656,481.91/30,492.72
6. Step 6: Final answer
   x = 24,715.95