Finding the Fourth Proportional to 13,457.54, 18,571.32 and 7,488.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,457.54 : 18,571.32 = 7,488.86 : x
2. Step 2: Convert to fraction form
   13,457.54/18,571.32 = 7,488.86/x
3. Step 3: Cross multiply
   13,457.54x = 18,571.32 × 7,488.86
4. Step 4: Simplify right side
   13,457.54x = 139,078,015.50
5. Step 5: Solve for x
   x = 139,078,015.50/13,457.54
6. Step 6: Final answer
   x = 10,334.58