Finding the Fourth Proportional to 12,756.30, 17,604.67 and 7,091.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,756.30 : 17,604.67 = 7,091.51 : x
2. Step 2: Convert to fraction form
   12,756.30/17,604.67 = 7,091.51/x
3. Step 3: Cross multiply
   12,756.30x = 17,604.67 × 7,091.51
4. Step 4: Simplify right side
   12,756.30x = 124,843,693.35
5. Step 5: Solve for x
   x = 124,843,693.35/12,756.30
6. Step 6: Final answer
   x = 9,786.83