Finding the Fourth Proportional to 5,139.33, 7,081.81 and 3,546.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.33 : 7,081.81 = 3,546.47 : x
2. Step 2: Convert to fraction form
   5,139.33/7,081.81 = 3,546.47/x
3. Step 3: Cross multiply
   5,139.33x = 7,081.81 × 3,546.47
4. Step 4: Simplify right side
   5,139.33x = 25,115,373.57
5. Step 5: Solve for x
   x = 25,115,373.57/5,139.33
6. Step 6: Final answer
   x = 4,886.90