Finding the Fourth Proportional to 5,185.10, 7,155.28 and 2,947.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.10 : 7,155.28 = 2,947.22 : x
2. Step 2: Convert to fraction form
   5,185.10/7,155.28 = 2,947.22/x
3. Step 3: Cross multiply
   5,185.10x = 7,155.28 × 2,947.22
4. Step 4: Simplify right side
   5,185.10x = 21,088,141.18
5. Step 5: Solve for x
   x = 21,088,141.18/5,185.10
6. Step 6: Final answer
   x = 4,067.07