Finding the Fourth Proportional to 12,399.36, 17,109.32 and 7,093.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.36 : 17,109.32 = 7,093.18 : x
2. Step 2: Convert to fraction form
   12,399.36/17,109.32 = 7,093.18/x
3. Step 3: Cross multiply
   12,399.36x = 17,109.32 × 7,093.18
4. Step 4: Simplify right side
   12,399.36x = 121,359,486.44
5. Step 5: Solve for x
   x = 121,359,486.44/12,399.36
6. Step 6: Final answer
   x = 9,787.56