Finding the Fourth Proportional to 12,568.04, 17,340.79 and 7,117.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,568.04 : 17,340.79 = 7,117.20 : x
2. Step 2: Convert to fraction form
   12,568.04/17,340.79 = 7,117.20/x
3. Step 3: Cross multiply
   12,568.04x = 17,340.79 × 7,117.20
4. Step 4: Simplify right side
   12,568.04x = 123,417,870.59
5. Step 5: Solve for x
   x = 123,417,870.59/12,568.04
6. Step 6: Final answer
   x = 9,819.98