Finding the Fourth Proportional to 4,142.34, 5,713.61 and 2,947.05

Step by Step Solution

1. Step 1: Write the proportion equation
   4,142.34 : 5,713.61 = 2,947.05 : x
2. Step 2: Convert to fraction form
   4,142.34/5,713.61 = 2,947.05/x
3. Step 3: Cross multiply
   4,142.34x = 5,713.61 × 2,947.05
4. Step 4: Simplify right side
   4,142.34x = 16,838,279.62
5. Step 5: Solve for x
   x = 16,838,279.62/4,142.34
6. Step 6: Final answer
   x = 4,064.92