Finding the Fourth Proportional to 9,064.72, 12,515.12 and 8,118.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,064.72 : 12,515.12 = 8,118.84 : x
2. Step 2: Convert to fraction form
   9,064.72/12,515.12 = 8,118.84/x
3. Step 3: Cross multiply
   9,064.72x = 12,515.12 × 8,118.84
4. Step 4: Simplify right side
   9,064.72x = 101,608,256.86
5. Step 5: Solve for x
   x = 101,608,256.86/9,064.72
6. Step 6: Final answer
   x = 11,209.20