Finding the Fourth Proportional to 8,055.64, 12,085.38 and 3,439

Step by Step Solution

1. Step 1: Write the proportion equation
   8,055.64 : 12,085.38 = 3,439 : x
2. Step 2: Convert to fraction form
   8,055.64/12,085.38 = 3,439/x
3. Step 3: Cross multiply
   8,055.64x = 12,085.38 × 3,439
4. Step 4: Simplify right side
   8,055.64x = 41,561,621.82
5. Step 5: Solve for x
   x = 41,561,621.82/8,055.64
6. Step 6: Final answer
   x = 5,159.32