Finding the Fourth Proportional to 8,756.17, 12,081.86 and 5,219.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,756.17 : 12,081.86 = 5,219.71 : x
2. Step 2: Convert to fraction form
   8,756.17/12,081.86 = 5,219.71/x
3. Step 3: Cross multiply
   8,756.17x = 12,081.86 × 5,219.71
4. Step 4: Simplify right side
   8,756.17x = 63,063,768.73
5. Step 5: Solve for x
   x = 63,063,768.73/8,756.17
6. Step 6: Final answer
   x = 7,202.21