Finding the Fourth Proportional to 10,385.14, 14,306.47 and 8,260.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.14 : 14,306.47 = 8,260.03 : x
2. Step 2: Convert to fraction form
   10,385.14/14,306.47 = 8,260.03/x
3. Step 3: Cross multiply
   10,385.14x = 14,306.47 × 8,260.03
4. Step 4: Simplify right side
   10,385.14x = 118,171,834.62
5. Step 5: Solve for x
   x = 118,171,834.62/10,385.14
6. Step 6: Final answer
   x = 11,378.94