Finding the Fourth Proportional to 11,276.76, 16,915.33 and 3,485.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,276.76 : 16,915.33 = 3,485.50 : x
2. Step 2: Convert to fraction form
   11,276.76/16,915.33 = 3,485.50/x
3. Step 3: Cross multiply
   11,276.76x = 16,915.33 × 3,485.50
4. Step 4: Simplify right side
   11,276.76x = 58,958,382.72
5. Step 5: Solve for x
   x = 58,958,382.72/11,276.76
6. Step 6: Final answer
   x = 5,228.31