Finding the Fourth Proportional to 10,078.46, 13,909.67 and 7,255.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.46 : 13,909.67 = 7,255.18 : x
2. Step 2: Convert to fraction form
   10,078.46/13,909.67 = 7,255.18/x
3. Step 3: Cross multiply
   10,078.46x = 13,909.67 × 7,255.18
4. Step 4: Simplify right side
   10,078.46x = 100,917,159.59
5. Step 5: Solve for x
   x = 100,917,159.59/10,078.46
6. Step 6: Final answer
   x = 10,013.15