Finding the Fourth Proportional to 13,150.96, 18,148.47 and 7,182.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.96 : 18,148.47 = 7,182.80 : x
2. Step 2: Convert to fraction form
   13,150.96/18,148.47 = 7,182.80/x
3. Step 3: Cross multiply
   13,150.96x = 18,148.47 × 7,182.80
4. Step 4: Simplify right side
   13,150.96x = 130,356,830.32
5. Step 5: Solve for x
   x = 130,356,830.32/13,150.96
6. Step 6: Final answer
   x = 9,912.34