Finding the Fourth Proportional to 8,851.72, 12,215.49 and 5,075.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.72 : 12,215.49 = 5,075.05 : x
2. Step 2: Convert to fraction form
   8,851.72/12,215.49 = 5,075.05/x
3. Step 3: Cross multiply
   8,851.72x = 12,215.49 × 5,075.05
4. Step 4: Simplify right side
   8,851.72x = 61,994,222.52
5. Step 5: Solve for x
   x = 61,994,222.52/8,851.72
6. Step 6: Final answer
   x = 7,003.64