Finding the Fourth Proportional to 11,280.47, 16,915.37 and 3,379.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,280.47 : 16,915.37 = 3,379.94 : x
2. Step 2: Convert to fraction form
   11,280.47/16,915.37 = 3,379.94/x
3. Step 3: Cross multiply
   11,280.47x = 16,915.37 × 3,379.94
4. Step 4: Simplify right side
   11,280.47x = 57,172,834.20
5. Step 5: Solve for x
   x = 57,172,834.20/11,280.47
6. Step 6: Final answer
   x = 5,068.30