Finding the Fourth Proportional to 13,200.73, 18,216.15 and 7,232.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.73 : 18,216.15 = 7,232.38 : x
2. Step 2: Convert to fraction form
   13,200.73/18,216.15 = 7,232.38/x
3. Step 3: Cross multiply
   13,200.73x = 18,216.15 × 7,232.38
4. Step 4: Simplify right side
   13,200.73x = 131,746,118.94
5. Step 5: Solve for x
   x = 131,746,118.94/13,200.73
6. Step 6: Final answer
   x = 9,980.21