Finding the Fourth Proportional to 13,059.50, 18,022.18 and 7,091.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,059.50 : 18,022.18 = 7,091.18 : x
2. Step 2: Convert to fraction form
   13,059.50/18,022.18 = 7,091.18/x
3. Step 3: Cross multiply
   13,059.50x = 18,022.18 × 7,091.18
4. Step 4: Simplify right side
   13,059.50x = 127,798,522.37
5. Step 5: Solve for x
   x = 127,798,522.37/13,059.50
6. Step 6: Final answer
   x = 9,785.87