Finding the Fourth Proportional to 13,150.40, 18,147.42 and 7,182.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.40 : 18,147.42 = 7,182.32 : x
2. Step 2: Convert to fraction form
   13,150.40/18,147.42 = 7,182.32/x
3. Step 3: Cross multiply
   13,150.40x = 18,147.42 × 7,182.32
4. Step 4: Simplify right side
   13,150.40x = 130,340,577.61
5. Step 5: Solve for x
   x = 130,340,577.61/13,150.40
6. Step 6: Final answer
   x = 9,911.53