Finding the Fourth Proportional to 13,114.96, 18,098.56 and 7,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,114.96 : 18,098.56 = 7,146.72 : x
2. Step 2: Convert to fraction form
   13,114.96/18,098.56 = 7,146.72/x
3. Step 3: Cross multiply
   13,114.96x = 18,098.56 × 7,146.72
4. Step 4: Simplify right side
   13,114.96x = 129,345,340.72
5. Step 5: Solve for x
   x = 129,345,340.72/13,114.96
6. Step 6: Final answer
   x = 9,862.43