Finding the Fourth Proportional to 15,507.27, 21,399.98 and 8,433.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,507.27 : 21,399.98 = 8,433.69 : x
2. Step 2: Convert to fraction form
   15,507.27/21,399.98 = 8,433.69/x
3. Step 3: Cross multiply
   15,507.27x = 21,399.98 × 8,433.69
4. Step 4: Simplify right side
   15,507.27x = 180,480,797.33
5. Step 5: Solve for x
   x = 180,480,797.33/15,507.27
6. Step 6: Final answer
   x = 11,638.46