Finding the Fourth Proportional to 13,457.34, 18,568.85 and 7,488.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,457.34 : 18,568.85 = 7,488.18 : x
2. Step 2: Convert to fraction form
   13,457.34/18,568.85 = 7,488.18/x
3. Step 3: Cross multiply
   13,457.34x = 18,568.85 × 7,488.18
4. Step 4: Simplify right side
   13,457.34x = 139,046,853.75
5. Step 5: Solve for x
   x = 139,046,853.75/13,457.34
6. Step 6: Final answer
   x = 10,332.42