Finding the Fourth Proportional to 12,422.88, 17,145.92 and 7,117.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.88 : 17,145.92 = 7,117.69 : x
2. Step 2: Convert to fraction form
   12,422.88/17,145.92 = 7,117.69/x
3. Step 3: Cross multiply
   12,422.88x = 17,145.92 × 7,117.69
4. Step 4: Simplify right side
   12,422.88x = 122,039,343.32
5. Step 5: Solve for x
   x = 122,039,343.32/12,422.88
6. Step 6: Final answer
   x = 9,823.76