Finding the Fourth Proportional to 8,755.67, 12,081.17 and 5,219.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.67 : 12,081.17 = 5,219.21 : x
2. Step 2: Convert to fraction form
   8,755.67/12,081.17 = 5,219.21/x
3. Step 3: Cross multiply
   8,755.67x = 12,081.17 × 5,219.21
4. Step 4: Simplify right side
   8,755.67x = 63,054,120.02
5. Step 5: Solve for x
   x = 63,054,120.02/8,755.67
6. Step 6: Final answer
   x = 7,201.52