Finding the Fourth Proportional to 12,042.07, 16,618.16 and 7,009.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,042.07 : 16,618.16 = 7,009.20 : x
2. Step 2: Convert to fraction form
   12,042.07/16,618.16 = 7,009.20/x
3. Step 3: Cross multiply
   12,042.07x = 16,618.16 × 7,009.20
4. Step 4: Simplify right side
   12,042.07x = 116,480,007.07
5. Step 5: Solve for x
   x = 116,480,007.07/12,042.07
6. Step 6: Final answer
   x = 9,672.76