Finding the Fourth Proportional to 9,629.87, 13,289.42 and 5,437.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,629.87 : 13,289.42 = 5,437.31 : x
2. Step 2: Convert to fraction form
   9,629.87/13,289.42 = 5,437.31/x
3. Step 3: Cross multiply
   9,629.87x = 13,289.42 × 5,437.31
4. Step 4: Simplify right side
   9,629.87x = 72,258,669.07
5. Step 5: Solve for x
   x = 72,258,669.07/9,629.87
6. Step 6: Final answer
   x = 7,503.60