Finding the Fourth Proportional to 12,320.72, 16,985.52 and 8,335.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,320.72 : 16,985.52 = 8,335.52 : x
2. Step 2: Convert to fraction form
   12,320.72/16,985.52 = 8,335.52/x
3. Step 3: Cross multiply
   12,320.72x = 16,985.52 × 8,335.52
4. Step 4: Simplify right side
   12,320.72x = 141,583,141.67
5. Step 5: Solve for x
   x = 141,583,141.67/12,320.72
6. Step 6: Final answer
   x = 11,491.47