Finding the Fourth Proportional to 9,628.34, 13,287.06 and 5,437.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,628.34 : 13,287.06 = 5,437.40 : x
2. Step 2: Convert to fraction form
   9,628.34/13,287.06 = 5,437.40/x
3. Step 3: Cross multiply
   9,628.34x = 13,287.06 × 5,437.40
4. Step 4: Simplify right side
   9,628.34x = 72,246,993.61
5. Step 5: Solve for x
   x = 72,246,993.61/9,628.34
6. Step 6: Final answer
   x = 7,503.58