Finding the Fourth Proportional to 9,156.36, 12,629.16 and 5,621.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.36 : 12,629.16 = 5,621.52 : x
2. Step 2: Convert to fraction form
   9,156.36/12,629.16 = 5,621.52/x
3. Step 3: Cross multiply
   9,156.36x = 12,629.16 × 5,621.52
4. Step 4: Simplify right side
   9,156.36x = 70,995,075.52
5. Step 5: Solve for x
   x = 70,995,075.52/9,156.36
6. Step 6: Final answer
   x = 7,753.64