Finding the Fourth Proportional to 12,816.32, 17,675.46 and 8,338.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,816.32 : 17,675.46 = 8,338.43 : x
2. Step 2: Convert to fraction form
   12,816.32/17,675.46 = 8,338.43/x
3. Step 3: Cross multiply
   12,816.32x = 17,675.46 × 8,338.43
4. Step 4: Simplify right side
   12,816.32x = 147,385,497.55
5. Step 5: Solve for x
   x = 147,385,497.55/12,816.32
6. Step 6: Final answer
   x = 11,499.83