Finding the Fourth Proportional to 12,717.91, 17,551.61 and 7,053.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,717.91 : 17,551.61 = 7,053.20 : x
2. Step 2: Convert to fraction form
   12,717.91/17,551.61 = 7,053.20/x
3. Step 3: Cross multiply
   12,717.91x = 17,551.61 × 7,053.20
4. Step 4: Simplify right side
   12,717.91x = 123,794,965.21
5. Step 5: Solve for x
   x = 123,794,965.21/12,717.91
6. Step 6: Final answer
   x = 9,733.91