Finding the Fourth Proportional to 7,969.39, 12,013.77 and 7,434.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,969.39 : 12,013.77 = 7,434.18 : x
2. Step 2: Convert to fraction form
   7,969.39/12,013.77 = 7,434.18/x
3. Step 3: Cross multiply
   7,969.39x = 12,013.77 × 7,434.18
4. Step 4: Simplify right side
   7,969.39x = 89,312,514.72
5. Step 5: Solve for x
   x = 89,312,514.72/7,969.39
6. Step 6: Final answer
   x = 11,206.95