Finding the Fourth Proportional to 12,450.86, 17,184.18 and 7,974.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,450.86 : 17,184.18 = 7,974.38 : x
2. Step 2: Convert to fraction form
   12,450.86/17,184.18 = 7,974.38/x
3. Step 3: Cross multiply
   12,450.86x = 17,184.18 × 7,974.38
4. Step 4: Simplify right side
   12,450.86x = 137,033,181.31
5. Step 5: Solve for x
   x = 137,033,181.31/12,450.86
6. Step 6: Final answer
   x = 11,005.92