Finding the Fourth Proportional to 12,396.22, 17,107.59 and 7,091.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,396.22 : 17,107.59 = 7,091.74 : x
2. Step 2: Convert to fraction form
   12,396.22/17,107.59 = 7,091.74/x
3. Step 3: Cross multiply
   12,396.22x = 17,107.59 × 7,091.74
4. Step 4: Simplify right side
   12,396.22x = 121,322,580.31
5. Step 5: Solve for x
   x = 121,322,580.31/12,396.22
6. Step 6: Final answer
   x = 9,787.06