Finding the Fourth Proportional to 7,097.31, 10,647.32 and 3,147.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,097.31 : 10,647.32 = 3,147.03 : x
2. Step 2: Convert to fraction form
   7,097.31/10,647.32 = 3,147.03/x
3. Step 3: Cross multiply
   7,097.31x = 10,647.32 × 3,147.03
4. Step 4: Simplify right side
   7,097.31x = 33,507,419.72
5. Step 5: Solve for x
   x = 33,507,419.72/7,097.31
6. Step 6: Final answer
   x = 4,721.14