Finding the Fourth Proportional to 11,012.47, 16,520.43 and 3,615.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,012.47 : 16,520.43 = 3,615.25 : x
2. Step 2: Convert to fraction form
   11,012.47/16,520.43 = 3,615.25/x
3. Step 3: Cross multiply
   11,012.47x = 16,520.43 × 3,615.25
4. Step 4: Simplify right side
   11,012.47x = 59,725,484.56
5. Step 5: Solve for x
   x = 59,725,484.56/11,012.47
6. Step 6: Final answer
   x = 5,423.44