Finding the Fourth Proportional to 7,141.83, 10,712.61 and 1,947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,141.83 : 10,712.61 = 1,947.72 : x
2. Step 2: Convert to fraction form
   7,141.83/10,712.61 = 1,947.72/x
3. Step 3: Cross multiply
   7,141.83x = 10,712.61 × 1,947.72
4. Step 4: Simplify right side
   7,141.83x = 20,865,164.75
5. Step 5: Solve for x
   x = 20,865,164.75/7,141.83
6. Step 6: Final answer
   x = 2,921.54