Finding the Fourth Proportional to 9,353.86, 12,908.55 and 5,577.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,353.86 : 12,908.55 = 5,577.75 : x
2. Step 2: Convert to fraction form
   9,353.86/12,908.55 = 5,577.75/x
3. Step 3: Cross multiply
   9,353.86x = 12,908.55 × 5,577.75
4. Step 4: Simplify right side
   9,353.86x = 72,000,664.76
5. Step 5: Solve for x
   x = 72,000,664.76/9,353.86
6. Step 6: Final answer
   x = 7,697.43