Finding the Fourth Proportional to 12,815.93, 17,674.94 and 8,338.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,815.93 : 17,674.94 = 8,338.05 : x
2. Step 2: Convert to fraction form
   12,815.93/17,674.94 = 8,338.05/x
3. Step 3: Cross multiply
   12,815.93x = 17,674.94 × 8,338.05
4. Step 4: Simplify right side
   12,815.93x = 147,374,554.31
5. Step 5: Solve for x
   x = 147,374,554.31/12,815.93
6. Step 6: Final answer
   x = 11,499.32