Finding the Fourth Proportional to 20,492.76, 30,702.06 and 9,408.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,492.76 : 30,702.06 = 9,408.72 : x
2. Step 2: Convert to fraction form
   20,492.76/30,702.06 = 9,408.72/x
3. Step 3: Cross multiply
   20,492.76x = 30,702.06 × 9,408.72
4. Step 4: Simplify right side
   20,492.76x = 288,867,085.96
5. Step 5: Solve for x
   x = 288,867,085.96/20,492.76
6. Step 6: Final answer
   x = 14,096.06