Finding the Fourth Proportional to 5,383.71, 7,429.61 and 2,961.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,383.71 : 7,429.61 = 2,961.18 : x
2. Step 2: Convert to fraction form
   5,383.71/7,429.61 = 2,961.18/x
3. Step 3: Cross multiply
   5,383.71x = 7,429.61 × 2,961.18
4. Step 4: Simplify right side
   5,383.71x = 22,000,360.59
5. Step 5: Solve for x
   x = 22,000,360.59/5,383.71
6. Step 6: Final answer
   x = 4,086.47