Finding the Fourth Proportional to 12,961.20, 17,874.72 and 8,483.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,961.20 : 17,874.72 = 8,483.52 : x
2. Step 2: Convert to fraction form
   12,961.20/17,874.72 = 8,483.52/x
3. Step 3: Cross multiply
   12,961.20x = 17,874.72 × 8,483.52
4. Step 4: Simplify right side
   12,961.20x = 151,640,544.61
5. Step 5: Solve for x
   x = 151,640,544.61/12,961.20
6. Step 6: Final answer
   x = 11,699.58