Finding the Fourth Proportional to 13,380.56, 18,464.98 and 7,412.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,380.56 : 18,464.98 = 7,412.22 : x
2. Step 2: Convert to fraction form
   13,380.56/18,464.98 = 7,412.22/x
3. Step 3: Cross multiply
   13,380.56x = 18,464.98 × 7,412.22
4. Step 4: Simplify right side
   13,380.56x = 136,866,494.06
5. Step 5: Solve for x
   x = 136,866,494.06/13,380.56
6. Step 6: Final answer
   x = 10,228.76