Finding the Fourth Proportional to 9,084.45, 12,536.91 and 5,105.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,084.45 : 12,536.91 = 5,105.55 : x
2. Step 2: Convert to fraction form
   9,084.45/12,536.91 = 5,105.55/x
3. Step 3: Cross multiply
   9,084.45x = 12,536.91 × 5,105.55
4. Step 4: Simplify right side
   9,084.45x = 64,007,820.85
5. Step 5: Solve for x
   x = 64,007,820.85/9,084.45
6. Step 6: Final answer
   x = 7,045.87