Finding the Fourth Proportional to 15,347.56, 21,182.04 and 9,382.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,347.56 : 21,182.04 = 9,382.72 : x
2. Step 2: Convert to fraction form
   15,347.56/21,182.04 = 9,382.72/x
3. Step 3: Cross multiply
   15,347.56x = 21,182.04 × 9,382.72
4. Step 4: Simplify right side
   15,347.56x = 198,745,150.35
5. Step 5: Solve for x
   x = 198,745,150.35/15,347.56
6. Step 6: Final answer
   x = 12,949.63