Finding the Fourth Proportional to 8,811.63, 12,159.84 and 5,667.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,811.63 : 12,159.84 = 5,667.82 : x
2. Step 2: Convert to fraction form
   8,811.63/12,159.84 = 5,667.82/x
3. Step 3: Cross multiply
   8,811.63x = 12,159.84 × 5,667.82
4. Step 4: Simplify right side
   8,811.63x = 68,919,753.95
5. Step 5: Solve for x
   x = 68,919,753.95/8,811.63
6. Step 6: Final answer
   x = 7,821.45