Finding the Fourth Proportional to 12,661.29, 17,465.27 and 7,622.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,661.29 : 17,465.27 = 7,622.01 : x
2. Step 2: Convert to fraction form
   12,661.29/17,465.27 = 7,622.01/x
3. Step 3: Cross multiply
   12,661.29x = 17,465.27 × 7,622.01
4. Step 4: Simplify right side
   12,661.29x = 133,120,462.59
5. Step 5: Solve for x
   x = 133,120,462.59/12,661.29
6. Step 6: Final answer
   x = 10,513.97