Finding the Fourth Proportional to 21,003.18, 28,998.63 and 14,704.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,003.18 : 28,998.63 = 14,704.62 : x
2. Step 2: Convert to fraction form
   21,003.18/28,998.63 = 14,704.62/x
3. Step 3: Cross multiply
   21,003.18x = 28,998.63 × 14,704.62
4. Step 4: Simplify right side
   21,003.18x = 426,413,834.67
5. Step 5: Solve for x
   x = 426,413,834.67/21,003.18
6. Step 6: Final answer
   x = 20,302.35