Finding the Fourth Proportional to 12,660.29, 17,463.89 and 7,621.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,660.29 : 17,463.89 = 7,621.01 : x
2. Step 2: Convert to fraction form
   12,660.29/17,463.89 = 7,621.01/x
3. Step 3: Cross multiply
   12,660.29x = 17,463.89 × 7,621.01
4. Step 4: Simplify right side
   12,660.29x = 133,092,480.33
5. Step 5: Solve for x
   x = 133,092,480.33/12,660.29
6. Step 6: Final answer
   x = 10,512.59