Finding the Fourth Proportional to 7,872.32, 10,863.55 and 4,684.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,872.32 : 10,863.55 = 4,684.89 : x
2. Step 2: Convert to fraction form
   7,872.32/10,863.55 = 4,684.89/x
3. Step 3: Cross multiply
   7,872.32x = 10,863.55 × 4,684.89
4. Step 4: Simplify right side
   7,872.32x = 50,894,522.25
5. Step 5: Solve for x
   x = 50,894,522.25/7,872.32
6. Step 6: Final answer
   x = 6,464.99