Finding the Fourth Proportional to 5,410.89, 7,467.30 and 3,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,410.89 : 7,467.30 = 3,172.50 : x
2. Step 2: Convert to fraction form
   5,410.89/7,467.30 = 3,172.50/x
3. Step 3: Cross multiply
   5,410.89x = 7,467.30 × 3,172.50
4. Step 4: Simplify right side
   5,410.89x = 23,690,009.25
5. Step 5: Solve for x
   x = 23,690,009.25/5,410.89
6. Step 6: Final answer
   x = 4,378.21