Finding the Fourth Proportional to 12,684.03, 17,501.91 and 7,964.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,684.03 : 17,501.91 = 7,964.97 : x
2. Step 2: Convert to fraction form
   12,684.03/17,501.91 = 7,964.97/x
3. Step 3: Cross multiply
   12,684.03x = 17,501.91 × 7,964.97
4. Step 4: Simplify right side
   12,684.03x = 139,402,188.09
5. Step 5: Solve for x
   x = 139,402,188.09/12,684.03
6. Step 6: Final answer
   x = 10,990.37