Finding the Fourth Proportional to 9,078.96, 12,530.22 and 5,100.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.96 : 12,530.22 = 5,100.36 : x
2. Step 2: Convert to fraction form
   9,078.96/12,530.22 = 5,100.36/x
3. Step 3: Cross multiply
   9,078.96x = 12,530.22 × 5,100.36
4. Step 4: Simplify right side
   9,078.96x = 63,908,632.88
5. Step 5: Solve for x
   x = 63,908,632.88/9,078.96
6. Step 6: Final answer
   x = 7,039.20