Finding the Fourth Proportional to 12,399.22, 17,106.76 and 7,020.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.22 : 17,106.76 = 7,020.93 : x
2. Step 2: Convert to fraction form
   12,399.22/17,106.76 = 7,020.93/x
3. Step 3: Cross multiply
   12,399.22x = 17,106.76 × 7,020.93
4. Step 4: Simplify right side
   12,399.22x = 120,105,364.49
5. Step 5: Solve for x
   x = 120,105,364.49/12,399.22
6. Step 6: Final answer
   x = 9,686.53