Finding the Fourth Proportional to 9,507.18, 13,119.57 and 5,315.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,507.18 : 13,119.57 = 5,315.34 : x
2. Step 2: Convert to fraction form
   9,507.18/13,119.57 = 5,315.34/x
3. Step 3: Cross multiply
   9,507.18x = 13,119.57 × 5,315.34
4. Step 4: Simplify right side
   9,507.18x = 69,734,975.20
5. Step 5: Solve for x
   x = 69,734,975.20/9,507.18
6. Step 6: Final answer
   x = 7,334.98