Finding the Fourth Proportional to 13,454.56, 18,568.50 and 7,486.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,454.56 : 18,568.50 = 7,486.12 : x
2. Step 2: Convert to fraction form
   13,454.56/18,568.50 = 7,486.12/x
3. Step 3: Cross multiply
   13,454.56x = 18,568.50 × 7,486.12
4. Step 4: Simplify right side
   13,454.56x = 139,006,019.22
5. Step 5: Solve for x
   x = 139,006,019.22/13,454.56
6. Step 6: Final answer
   x = 10,331.52