Finding the Fourth Proportional to 10,280.66, 15,421.89 and 2,885.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,280.66 : 15,421.89 = 2,885.18 : x
2. Step 2: Convert to fraction form
   10,280.66/15,421.89 = 2,885.18/x
3. Step 3: Cross multiply
   10,280.66x = 15,421.89 × 2,885.18
4. Step 4: Simplify right side
   10,280.66x = 44,494,928.59
5. Step 5: Solve for x
   x = 44,494,928.59/10,280.66
6. Step 6: Final answer
   x = 4,328.02