Finding the Fourth Proportional to 13,621.37, 18,796.96 and 7,653.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,621.37 : 18,796.96 = 7,653.29 : x
2. Step 2: Convert to fraction form
   13,621.37/18,796.96 = 7,653.29/x
3. Step 3: Cross multiply
   13,621.37x = 18,796.96 × 7,653.29
4. Step 4: Simplify right side
   13,621.37x = 143,858,501.58
5. Step 5: Solve for x
   x = 143,858,501.58/13,621.37
6. Step 6: Final answer
   x = 10,561.24