Finding the Fourth Proportional to 11,209.30, 16,813.34 and 3,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,209.30 : 16,813.34 = 3,417.50 : x
2. Step 2: Convert to fraction form
   11,209.30/16,813.34 = 3,417.50/x
3. Step 3: Cross multiply
   11,209.30x = 16,813.34 × 3,417.50
4. Step 4: Simplify right side
   11,209.30x = 57,459,589.45
5. Step 5: Solve for x
   x = 57,459,589.45/11,209.30
6. Step 6: Final answer
   x = 5,126.06