Finding the Fourth Proportional to 19,288.50, 28,922.33 and 10,408.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,288.50 : 28,922.33 = 10,408.61 : x
2. Step 2: Convert to fraction form
   19,288.50/28,922.33 = 10,408.61/x
3. Step 3: Cross multiply
   19,288.50x = 28,922.33 × 10,408.61
4. Step 4: Simplify right side
   19,288.50x = 301,041,056.61
5. Step 5: Solve for x
   x = 301,041,056.61/19,288.50
6. Step 6: Final answer
   x = 15,607.28