Finding the Fourth Proportional to 9,354.69, 12,909.96 and 5,377.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.69 : 12,909.96 = 5,377.14 : x
2. Step 2: Convert to fraction form
   9,354.69/12,909.96 = 5,377.14/x
3. Step 3: Cross multiply
   9,354.69x = 12,909.96 × 5,377.14
4. Step 4: Simplify right side
   9,354.69x = 69,418,662.31
5. Step 5: Solve for x
   x = 69,418,662.31/9,354.69
6. Step 6: Final answer
   x = 7,420.73