Finding the Fourth Proportional to 11,081.68, 16,633.46 and 5,242.39

Step by Step Solution

1. Step 1: Write the proportion equation
   11,081.68 : 16,633.46 = 5,242.39 : x
2. Step 2: Convert to fraction form
   11,081.68/16,633.46 = 5,242.39/x
3. Step 3: Cross multiply
   11,081.68x = 16,633.46 × 5,242.39
4. Step 4: Simplify right side
   11,081.68x = 87,199,084.37
5. Step 5: Solve for x
   x = 87,199,084.37/11,081.68
6. Step 6: Final answer
   x = 7,868.76