Finding the Fourth Proportional to 9,209.08, 13,808.76 and 3,285.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,209.08 : 13,808.76 = 3,285.15 : x
2. Step 2: Convert to fraction form
   9,209.08/13,808.76 = 3,285.15/x
3. Step 3: Cross multiply
   9,209.08x = 13,808.76 × 3,285.15
4. Step 4: Simplify right side
   9,209.08x = 45,363,847.91
5. Step 5: Solve for x
   x = 45,363,847.91/9,209.08
6. Step 6: Final answer
   x = 4,925.99