Finding the Fourth Proportional to 9,399.08, 12,972.11 and 5,419.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.08 : 12,972.11 = 5,419.41 : x
2. Step 2: Convert to fraction form
   9,399.08/12,972.11 = 5,419.41/x
3. Step 3: Cross multiply
   9,399.08x = 12,972.11 × 5,419.41
4. Step 4: Simplify right side
   9,399.08x = 70,301,182.66
5. Step 5: Solve for x
   x = 70,301,182.66/9,399.08
6. Step 6: Final answer
   x = 7,479.58