Finding the Fourth Proportional to 11,407.42, 17,109.91 and 3,615.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,407.42 : 17,109.91 = 3,615.63 : x
2. Step 2: Convert to fraction form
   11,407.42/17,109.91 = 3,615.63/x
3. Step 3: Cross multiply
   11,407.42x = 17,109.91 × 3,615.63
4. Step 4: Simplify right side
   11,407.42x = 61,863,103.89
5. Step 5: Solve for x
   x = 61,863,103.89/11,407.42
6. Step 6: Final answer
   x = 5,423.06