Finding the Fourth Proportional to 12,085.32, 18,126.60 and 3,319.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.32 : 18,126.60 = 3,319.56 : x
2. Step 2: Convert to fraction form
   12,085.32/18,126.60 = 3,319.56/x
3. Step 3: Cross multiply
   12,085.32x = 18,126.60 × 3,319.56
4. Step 4: Simplify right side
   12,085.32x = 60,172,336.30
5. Step 5: Solve for x
   x = 60,172,336.30/12,085.32
6. Step 6: Final answer
   x = 4,978.96