Finding the Fourth Proportional to 8,757.82, 12,085.50 and 5,219.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.82 : 12,085.50 = 5,219.20 : x
2. Step 2: Convert to fraction form
   8,757.82/12,085.50 = 5,219.20/x
3. Step 3: Cross multiply
   8,757.82x = 12,085.50 × 5,219.20
4. Step 4: Simplify right side
   8,757.82x = 63,076,641.60
5. Step 5: Solve for x
   x = 63,076,641.60/8,757.82
6. Step 6: Final answer
   x = 7,202.32