Finding the Fourth Proportional to 11,012.63, 16,515.47 and 3,615.35

Step by Step Solution

1. Step 1: Write the proportion equation
   11,012.63 : 16,515.47 = 3,615.35 : x
2. Step 2: Convert to fraction form
   11,012.63/16,515.47 = 3,615.35/x
3. Step 3: Cross multiply
   11,012.63x = 16,515.47 × 3,615.35
4. Step 4: Simplify right side
   11,012.63x = 59,709,103.81
5. Step 5: Solve for x
   x = 59,709,103.81/11,012.63
6. Step 6: Final answer
   x = 5,421.88