Finding the Fourth Proportional to 10,162.45, 14,030.72 and 6,390.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,162.45 : 14,030.72 = 6,390.82 : x
2. Step 2: Convert to fraction form
   10,162.45/14,030.72 = 6,390.82/x
3. Step 3: Cross multiply
   10,162.45x = 14,030.72 × 6,390.82
4. Step 4: Simplify right side
   10,162.45x = 89,667,805.99
5. Step 5: Solve for x
   x = 89,667,805.99/10,162.45
6. Step 6: Final answer
   x = 8,823.44