Finding the Fourth Proportional to 12,442.75, 17,169.86 and 7,406.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,442.75 : 17,169.86 = 7,406.16 : x
2. Step 2: Convert to fraction form
   12,442.75/17,169.86 = 7,406.16/x
3. Step 3: Cross multiply
   12,442.75x = 17,169.86 × 7,406.16
4. Step 4: Simplify right side
   12,442.75x = 127,162,730.34
5. Step 5: Solve for x
   x = 127,162,730.34/12,442.75
6. Step 6: Final answer
   x = 10,219.83