Finding the Fourth Proportional to 11,085.72, 16,630.47 and 3,688.26

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.72 : 16,630.47 = 3,688.26 : x
2. Step 2: Convert to fraction form
   11,085.72/16,630.47 = 3,688.26/x
3. Step 3: Cross multiply
   11,085.72x = 16,630.47 × 3,688.26
4. Step 4: Simplify right side
   11,085.72x = 61,337,497.28
5. Step 5: Solve for x
   x = 61,337,497.28/11,085.72
6. Step 6: Final answer
   x = 5,533.02