Finding the Fourth Proportional to 13,308.59, 18,365.97 and 7,340.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.59 : 18,365.97 = 7,340.47 : x
2. Step 2: Convert to fraction form
   13,308.59/18,365.97 = 7,340.47/x
3. Step 3: Cross multiply
   13,308.59x = 18,365.97 × 7,340.47
4. Step 4: Simplify right side
   13,308.59x = 134,814,833.42
5. Step 5: Solve for x
   x = 134,814,833.42/13,308.59
6. Step 6: Final answer
   x = 10,129.91