Finding the Fourth Proportional to 13,114.16, 18,097.55 and 7,145.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,114.16 : 18,097.55 = 7,145.83 : x
2. Step 2: Convert to fraction form
   13,114.16/18,097.55 = 7,145.83/x
3. Step 3: Cross multiply
   13,114.16x = 18,097.55 × 7,145.83
4. Step 4: Simplify right side
   13,114.16x = 129,322,025.23
5. Step 5: Solve for x
   x = 129,322,025.23/13,114.16
6. Step 6: Final answer
   x = 9,861.25