Finding the Fourth Proportional to 21,648.59, 29,875.94 and 12,089.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,648.59 : 29,875.94 = 12,089.04 : x
2. Step 2: Convert to fraction form
   21,648.59/29,875.94 = 12,089.04/x
3. Step 3: Cross multiply
   21,648.59x = 29,875.94 × 12,089.04
4. Step 4: Simplify right side
   21,648.59x = 361,171,433.70
5. Step 5: Solve for x
   x = 361,171,433.70/21,648.59
6. Step 6: Final answer
   x = 16,683.37