Finding the Fourth Proportional to 7,855.30, 10,838.67 and 4,669.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,855.30 : 10,838.67 = 4,669.72 : x
2. Step 2: Convert to fraction form
   7,855.30/10,838.67 = 4,669.72/x
3. Step 3: Cross multiply
   7,855.30x = 10,838.67 × 4,669.72
4. Step 4: Simplify right side
   7,855.30x = 50,613,499.88
5. Step 5: Solve for x
   x = 50,613,499.88/7,855.30
6. Step 6: Final answer
   x = 6,443.23