Finding the Fourth Proportional to 12,391.25, 17,097.72 and 7,013.66

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391.25 : 17,097.72 = 7,013.66 : x
2. Step 2: Convert to fraction form
   12,391.25/17,097.72 = 7,013.66/x
3. Step 3: Cross multiply
   12,391.25x = 17,097.72 × 7,013.66
4. Step 4: Simplify right side
   12,391.25x = 119,917,594.86
5. Step 5: Solve for x
   x = 119,917,594.86/12,391.25
6. Step 6: Final answer
   x = 9,677.60