Finding the Fourth Proportional to 11,010.30, 16,515.60 and 3,615.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,010.30 : 16,515.60 = 3,615.31 : x
2. Step 2: Convert to fraction form
   11,010.30/16,515.60 = 3,615.31/x
3. Step 3: Cross multiply
   11,010.30x = 16,515.60 × 3,615.31
4. Step 4: Simplify right side
   11,010.30x = 59,709,013.84
5. Step 5: Solve for x
   x = 59,709,013.84/11,010.30
6. Step 6: Final answer
   x = 5,423.01