Finding the Fourth Proportional to 13,282.89, 18,330.42 and 7,315.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,282.89 : 18,330.42 = 7,315.02 : x
2. Step 2: Convert to fraction form
   13,282.89/18,330.42 = 7,315.02/x
3. Step 3: Cross multiply
   13,282.89x = 18,330.42 × 7,315.02
4. Step 4: Simplify right side
   13,282.89x = 134,087,388.91
5. Step 5: Solve for x
   x = 134,087,388.91/13,282.89
6. Step 6: Final answer
   x = 10,094.75