Finding the Fourth Proportional to 12,626.48, 17,422.56 and 7,320.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,626.48 : 17,422.56 = 7,320.20 : x
2. Step 2: Convert to fraction form
   12,626.48/17,422.56 = 7,320.20/x
3. Step 3: Cross multiply
   12,626.48x = 17,422.56 × 7,320.20
4. Step 4: Simplify right side
   12,626.48x = 127,536,623.71
5. Step 5: Solve for x
   x = 127,536,623.71/12,626.48
6. Step 6: Final answer
   x = 10,100.73