Finding the Fourth Proportional to 12,320.44, 17,002.90 and 7,015.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,320.44 : 17,002.90 = 7,015.72 : x
2. Step 2: Convert to fraction form
   12,320.44/17,002.90 = 7,015.72/x
3. Step 3: Cross multiply
   12,320.44x = 17,002.90 × 7,015.72
4. Step 4: Simplify right side
   12,320.44x = 119,287,585.59
5. Step 5: Solve for x
   x = 119,287,585.59/12,320.44
6. Step 6: Final answer
   x = 9,682.09