Finding the Fourth Proportional to 13,150.71, 18,147.93 and 7,182.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.71 : 18,147.93 = 7,182.45 : x
2. Step 2: Convert to fraction form
   13,150.71/18,147.93 = 7,182.45/x
3. Step 3: Cross multiply
   13,150.71x = 18,147.93 × 7,182.45
4. Step 4: Simplify right side
   13,150.71x = 130,346,599.83
5. Step 5: Solve for x
   x = 130,346,599.83/13,150.71
6. Step 6: Final answer
   x = 9,911.75