Finding the Fourth Proportional to 15,469.30, 21,347.50 and 8,395.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,469.30 : 21,347.50 = 8,395.72 : x
2. Step 2: Convert to fraction form
   15,469.30/21,347.50 = 8,395.72/x
3. Step 3: Cross multiply
   15,469.30x = 21,347.50 × 8,395.72
4. Step 4: Simplify right side
   15,469.30x = 179,227,597.70
5. Step 5: Solve for x
   x = 179,227,597.70/15,469.30
6. Step 6: Final answer
   x = 11,586.02