Finding the Fourth Proportional to 13,290.55, 18,341.19 and 7,322.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,290.55 : 18,341.19 = 7,322.18 : x
2. Step 2: Convert to fraction form
   13,290.55/18,341.19 = 7,322.18/x
3. Step 3: Cross multiply
   13,290.55x = 18,341.19 × 7,322.18
4. Step 4: Simplify right side
   13,290.55x = 134,297,402.89
5. Step 5: Solve for x
   x = 134,297,402.89/13,290.55
6. Step 6: Final answer
   x = 10,104.73