Finding the Fourth Proportional to 13,097.95, 18,091.41 and 9,507.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,097.95 : 18,091.41 = 9,507.18 : x
2. Step 2: Convert to fraction form
   13,097.95/18,091.41 = 9,507.18/x
3. Step 3: Cross multiply
   13,097.95x = 18,091.41 × 9,507.18
4. Step 4: Simplify right side
   13,097.95x = 171,998,291.32
5. Step 5: Solve for x
   x = 171,998,291.32/13,097.95
6. Step 6: Final answer
   x = 13,131.70