Finding the Fourth Proportional to 5,191.46, 7,783.52 and 2,415.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,191.46 : 7,783.52 = 2,415.18 : x
2. Step 2: Convert to fraction form
   5,191.46/7,783.52 = 2,415.18/x
3. Step 3: Cross multiply
   5,191.46x = 7,783.52 × 2,415.18
4. Step 4: Simplify right side
   5,191.46x = 18,798,601.83
5. Step 5: Solve for x
   x = 18,798,601.83/5,191.46
6. Step 6: Final answer
   x = 3,621.06