Finding the Fourth Proportional to 13,308.47, 18,365.80 and 7,340.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.47 : 18,365.80 = 7,340.34 : x
2. Step 2: Convert to fraction form
   13,308.47/18,365.80 = 7,340.34/x
3. Step 3: Cross multiply
   13,308.47x = 18,365.80 × 7,340.34
4. Step 4: Simplify right side
   13,308.47x = 134,811,216.37
5. Step 5: Solve for x
   x = 134,811,216.37/13,308.47
6. Step 6: Final answer
   x = 10,129.73