Finding the Fourth Proportional to 9,354.08, 12,910.28 and 5,577.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.08 : 12,910.28 = 5,577.48 : x
2. Step 2: Convert to fraction form
   9,354.08/12,910.28 = 5,577.48/x
3. Step 3: Cross multiply
   9,354.08x = 12,910.28 × 5,577.48
4. Step 4: Simplify right side
   9,354.08x = 72,006,797.32
5. Step 5: Solve for x
   x = 72,006,797.32/9,354.08
6. Step 6: Final answer
   x = 7,697.90