Finding the Fourth Proportional to 7,131.47, 10,689.50 and 2,970.36

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.47 : 10,689.50 = 2,970.36 : x
2. Step 2: Convert to fraction form
   7,131.47/10,689.50 = 2,970.36/x
3. Step 3: Cross multiply
   7,131.47x = 10,689.50 × 2,970.36
4. Step 4: Simplify right side
   7,131.47x = 31,751,648.37
5. Step 5: Solve for x
   x = 31,751,648.37/7,131.47
6. Step 6: Final answer
   x = 4,452.33