Finding the Fourth Proportional to 8,561.21, 12,844.56 and 3,635.00

Step by Step Solution

1. Step 1: Write the proportion equation
   8,561.21 : 12,844.56 = 3,635.00 : x
2. Step 2: Convert to fraction form
   8,561.21/12,844.56 = 3,635.00/x
3. Step 3: Cross multiply
   8,561.21x = 12,844.56 × 3,635.00
4. Step 4: Simplify right side
   8,561.21x = 46,689,911.38
5. Step 5: Solve for x
   x = 46,689,911.38/8,561.21
6. Step 6: Final answer
   x = 5,453.66