Finding the Fourth Proportional to 13,308.32, 18,365.60 and 7,340.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.32 : 18,365.60 = 7,340.20 : x
2. Step 2: Convert to fraction form
   13,308.32/18,365.60 = 7,340.20/x
3. Step 3: Cross multiply
   13,308.32x = 18,365.60 × 7,340.20
4. Step 4: Simplify right side
   13,308.32x = 134,807,149.56
5. Step 5: Solve for x
   x = 134,807,149.56/13,308.32
6. Step 6: Final answer
   x = 10,129.54