Finding the Fourth Proportional to 8,572.32, 12,863.28 and 4,680.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,572.32 : 12,863.28 = 4,680.96 : x
2. Step 2: Convert to fraction form
   8,572.32/12,863.28 = 4,680.96/x
3. Step 3: Cross multiply
   8,572.32x = 12,863.28 × 4,680.96
4. Step 4: Simplify right side
   8,572.32x = 60,212,499.15
5. Step 5: Solve for x
   x = 60,212,499.15/8,572.32
6. Step 6: Final answer
   x = 7,024.06