Finding the Fourth Proportional to 9,394.80, 12,964.98 and 5,415.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,394.80 : 12,964.98 = 5,415.24 : x
2. Step 2: Convert to fraction form
   9,394.80/12,964.98 = 5,415.24/x
3. Step 3: Cross multiply
   9,394.80x = 12,964.98 × 5,415.24
4. Step 4: Simplify right side
   9,394.80x = 70,208,478.30
5. Step 5: Solve for x
   x = 70,208,478.30/9,394.80
6. Step 6: Final answer
   x = 7,473.12