Finding the Fourth Proportional to 5,131.06, 7,695.48 and 1,621.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.06 : 7,695.48 = 1,621.34 : x
2. Step 2: Convert to fraction form
   5,131.06/7,695.48 = 1,621.34/x
3. Step 3: Cross multiply
   5,131.06x = 7,695.48 × 1,621.34
4. Step 4: Simplify right side
   5,131.06x = 12,476,957.15
5. Step 5: Solve for x
   x = 12,476,957.15/5,131.06
6. Step 6: Final answer
   x = 2,431.65