Finding the Fourth Proportional to 12,760.77, 17,626.71 and 10,643.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.77 : 17,626.71 = 10,643.22 : x
2. Step 2: Convert to fraction form
   12,760.77/17,626.71 = 10,643.22/x
3. Step 3: Cross multiply
   12,760.77x = 17,626.71 × 10,643.22
4. Step 4: Simplify right side
   12,760.77x = 187,604,952.41
5. Step 5: Solve for x
   x = 187,604,952.41/12,760.77
6. Step 6: Final answer
   x = 14,701.70