Finding the Fourth Proportional to 10,209.50, 15,317.90 and 5,019.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,209.50 : 15,317.90 = 5,019.02 : x
2. Step 2: Convert to fraction form
   10,209.50/15,317.90 = 5,019.02/x
3. Step 3: Cross multiply
   10,209.50x = 15,317.90 × 5,019.02
4. Step 4: Simplify right side
   10,209.50x = 76,880,846.46
5. Step 5: Solve for x
   x = 76,880,846.46/10,209.50
6. Step 6: Final answer
   x = 7,530.32