Finding the Fourth Proportional to 11,081.64, 15,307.25 and 8,216.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,081.64 : 15,307.25 = 8,216.18 : x
2. Step 2: Convert to fraction form
   11,081.64/15,307.25 = 8,216.18/x
3. Step 3: Cross multiply
   11,081.64x = 15,307.25 × 8,216.18
4. Step 4: Simplify right side
   11,081.64x = 125,767,003.69
5. Step 5: Solve for x
   x = 125,767,003.69/11,081.64
6. Step 6: Final answer
   x = 11,349.13