Finding the Fourth Proportional to 9,288.10, 13,982.83 and 8,471.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.10 : 13,982.83 = 8,471.62 : x
2. Step 2: Convert to fraction form
   9,288.10/13,982.83 = 8,471.62/x
3. Step 3: Cross multiply
   9,288.10x = 13,982.83 × 8,471.62
4. Step 4: Simplify right side
   9,288.10x = 118,457,222.28
5. Step 5: Solve for x
   x = 118,457,222.28/9,288.10
6. Step 6: Final answer
   x = 12,753.65