Finding the Fourth Proportional to 12,433.42, 18,642.09 and 5,322.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,433.42 : 18,642.09 = 5,322.29 : x
2. Step 2: Convert to fraction form
   12,433.42/18,642.09 = 5,322.29/x
3. Step 3: Cross multiply
   12,433.42x = 18,642.09 × 5,322.29
4. Step 4: Simplify right side
   12,433.42x = 99,218,609.19
5. Step 5: Solve for x
   x = 99,218,609.19/12,433.42
6. Step 6: Final answer
   x = 7,979.99