Finding the Fourth Proportional to 5,131.95, 7,695.18 and 2,664.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.95 : 7,695.18 = 2,664.29 : x
2. Step 2: Convert to fraction form
   5,131.95/7,695.18 = 2,664.29/x
3. Step 3: Cross multiply
   5,131.95x = 7,695.18 × 2,664.29
4. Step 4: Simplify right side
   5,131.95x = 20,502,152.65
5. Step 5: Solve for x
   x = 20,502,152.65/5,131.95
6. Step 6: Final answer
   x = 3,995.00