Finding the Fourth Proportional to 12,360.36, 17,050.94 and 8,380.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,360.36 : 17,050.94 = 8,380.12 : x
2. Step 2: Convert to fraction form
   12,360.36/17,050.94 = 8,380.12/x
3. Step 3: Cross multiply
   12,360.36x = 17,050.94 × 8,380.12
4. Step 4: Simplify right side
   12,360.36x = 142,888,923.31
5. Step 5: Solve for x
   x = 142,888,923.31/12,360.36
6. Step 6: Final answer
   x = 11,560.26