Finding the Fourth Proportional to 10,321.20, 15,487.97 and 3,747.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,321.20 : 15,487.97 = 3,747.89 : x
2. Step 2: Convert to fraction form
   10,321.20/15,487.97 = 3,747.89/x
3. Step 3: Cross multiply
   10,321.20x = 15,487.97 × 3,747.89
4. Step 4: Simplify right side
   10,321.20x = 58,047,189.14
5. Step 5: Solve for x
   x = 58,047,189.14/10,321.20
6. Step 6: Final answer
   x = 5,624.07