Finding the Fourth Proportional to 11,085.12, 16,619.04 and 5,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,085.12 : 16,619.04 = 5,238.72 : x
2. Step 2: Convert to fraction form
   11,085.12/16,619.04 = 5,238.72/x
3. Step 3: Cross multiply
   11,085.12x = 16,619.04 × 5,238.72
4. Step 4: Simplify right side
   11,085.12x = 87,062,497.23
5. Step 5: Solve for x
   x = 87,062,497.23/11,085.12
6. Step 6: Final answer
   x = 7,854.00