Finding the Fourth Proportional to 10,281.39, 14,212.22 and 9,173.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,281.39 : 14,212.22 = 9,173.31 : x
2. Step 2: Convert to fraction form
   10,281.39/14,212.22 = 9,173.31/x
3. Step 3: Cross multiply
   10,281.39x = 14,212.22 × 9,173.31
4. Step 4: Simplify right side
   10,281.39x = 130,373,051.72
5. Step 5: Solve for x
   x = 130,373,051.72/10,281.39
6. Step 6: Final answer
   x = 12,680.50