Finding the Fourth Proportional to 5,185.61, 7,155.84 and 2,947.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.61 : 7,155.84 = 2,947.18 : x
2. Step 2: Convert to fraction form
   5,185.61/7,155.84 = 2,947.18/x
3. Step 3: Cross multiply
   5,185.61x = 7,155.84 × 2,947.18
4. Step 4: Simplify right side
   5,185.61x = 21,089,498.02
5. Step 5: Solve for x
   x = 21,089,498.02/5,185.61
6. Step 6: Final answer
   x = 4,066.93