Finding the Fourth Proportional to 9,326.26, 12,870.17 and 5,134.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,326.26 : 12,870.17 = 5,134.51 : x
2. Step 2: Convert to fraction form
   9,326.26/12,870.17 = 5,134.51/x
3. Step 3: Cross multiply
   9,326.26x = 12,870.17 × 5,134.51
4. Step 4: Simplify right side
   9,326.26x = 66,082,016.57
5. Step 5: Solve for x
   x = 66,082,016.57/9,326.26
6. Step 6: Final answer
   x = 7,085.59