Finding the Fourth Proportional to 11,012.58, 16,513.38 and 3,515.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,012.58 : 16,513.38 = 3,515.15 : x
2. Step 2: Convert to fraction form
   11,012.58/16,513.38 = 3,515.15/x
3. Step 3: Cross multiply
   11,012.58x = 16,513.38 × 3,515.15
4. Step 4: Simplify right side
   11,012.58x = 58,047,031.41
5. Step 5: Solve for x
   x = 58,047,031.41/11,012.58
6. Step 6: Final answer
   x = 5,270.98