Finding the Fourth Proportional to 13,087.34, 18,060.92 and 7,422.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,087.34 : 18,060.92 = 7,422.32 : x
2. Step 2: Convert to fraction form
   13,087.34/18,060.92 = 7,422.32/x
3. Step 3: Cross multiply
   13,087.34x = 18,060.92 × 7,422.32
4. Step 4: Simplify right side
   13,087.34x = 134,053,800.32
5. Step 5: Solve for x
   x = 134,053,800.32/13,087.34
6. Step 6: Final answer
   x = 10,243.02