Finding the Fourth Proportional to 9,118.08, 13,665.60 and 9,020.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.08 : 13,665.60 = 9,020.16 : x
2. Step 2: Convert to fraction form
   9,118.08/13,665.60 = 9,020.16/x
3. Step 3: Cross multiply
   9,118.08x = 13,665.60 × 9,020.16
4. Step 4: Simplify right side
   9,118.08x = 123,265,898.50
5. Step 5: Solve for x
   x = 123,265,898.50/9,118.08
6. Step 6: Final answer
   x = 13,518.84