Finding the Fourth Proportional to 21,603.39, 29,813.31 and 12,650.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,603.39 : 29,813.31 = 12,650.06 : x
2. Step 2: Convert to fraction form
   21,603.39/29,813.31 = 12,650.06/x
3. Step 3: Cross multiply
   21,603.39x = 29,813.31 × 12,650.06
4. Step 4: Simplify right side
   21,603.39x = 377,140,160.30
5. Step 5: Solve for x
   x = 377,140,160.30/21,603.39
6. Step 6: Final answer
   x = 17,457.45