Finding the Fourth Proportional to 30,492.80, 45,734.56 and 8,307.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,492.80 : 45,734.56 = 8,307.92 : x
2. Step 2: Convert to fraction form
   30,492.80/45,734.56 = 8,307.92/x
3. Step 3: Cross multiply
   30,492.80x = 45,734.56 × 8,307.92
4. Step 4: Simplify right side
   30,492.80x = 379,959,065.72
5. Step 5: Solve for x
   x = 379,959,065.72/30,492.80
6. Step 6: Final answer
   x = 12,460.62