Finding the Fourth Proportional to 13,456.35, 18,568.17 and 7,487.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.35 : 18,568.17 = 7,487.22 : x
2. Step 2: Convert to fraction form
   13,456.35/18,568.17 = 7,487.22/x
3. Step 3: Cross multiply
   13,456.35x = 18,568.17 × 7,487.22
4. Step 4: Simplify right side
   13,456.35x = 139,023,973.79
5. Step 5: Solve for x
   x = 139,023,973.79/13,456.35
6. Step 6: Final answer
   x = 10,331.48