Finding the Fourth Proportional to 5,772.18, 8,648.46 and 5,212.02

Step by Step Solution

1. Step 1: Write the proportion equation
   5,772.18 : 8,648.46 = 5,212.02 : x
2. Step 2: Convert to fraction form
   5,772.18/8,648.46 = 5,212.02/x
3. Step 3: Cross multiply
   5,772.18x = 8,648.46 × 5,212.02
4. Step 4: Simplify right side
   5,772.18x = 45,075,946.49
5. Step 5: Solve for x
   x = 45,075,946.49/5,772.18
6. Step 6: Final answer
   x = 7,809.17