Finding the Fourth Proportional to 10,407.62, 14,362.72 and 6,218.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,407.62 : 14,362.72 = 6,218.30 : x
2. Step 2: Convert to fraction form
   10,407.62/14,362.72 = 6,218.30/x
3. Step 3: Cross multiply
   10,407.62x = 14,362.72 × 6,218.30
4. Step 4: Simplify right side
   10,407.62x = 89,311,701.78
5. Step 5: Solve for x
   x = 89,311,701.78/10,407.62
6. Step 6: Final answer
   x = 8,581.38