Finding the Fourth Proportional to 11,085.16, 16,630.12 and 3,187.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.16 : 16,630.12 = 3,187.61 : x
2. Step 2: Convert to fraction form
   11,085.16/16,630.12 = 3,187.61/x
3. Step 3: Cross multiply
   11,085.16x = 16,630.12 × 3,187.61
4. Step 4: Simplify right side
   11,085.16x = 53,010,336.81
5. Step 5: Solve for x
   x = 53,010,336.81/11,085.16
6. Step 6: Final answer
   x = 4,782.10