Finding the Fourth Proportional to 21,043.98, 29,039.04 and 12,545.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,043.98 : 29,039.04 = 12,545.46 : x
2. Step 2: Convert to fraction form
   21,043.98/29,039.04 = 12,545.46/x
3. Step 3: Cross multiply
   21,043.98x = 29,039.04 × 12,545.46
4. Step 4: Simplify right side
   21,043.98x = 364,308,114.76
5. Step 5: Solve for x
   x = 364,308,114.76/21,043.98
6. Step 6: Final answer
   x = 17,311.75